Chapter 6 : Essential Clinical Anatomy, Fourth Edition - PowerPoint Quizzes

Clinically Oriented Anatomy 6th edition Chapter 6 Upper Limb PowerPoint Quiz Which of the following is incorrect pertaining to the clavicle? It is attached via ligaments to the coracoid process. The superior surface is grooved for the subclavian artery. After a fracture, the medial segment is raised by the sternocleidomastoid muscle. Fractures are almost always accompanied by acromioclavicular dislocation. Patients with fractured clavicles typically need to support the ipsilateral upper limb with the contralateral one. Which of the following is incorrect pertaining to the clavicle? It is attached via ligaments to the coracoid process. The superior surface is grooved for the subclavian artery. After a fracture, the medial segment is raised by the sternocleidomastoid muscle. Fractures are almost always accompanied by acromioclavicular dislocation. Patients with fractured clavicles typically need to support the ipsilateral upper limb with the contralateral one. Answer: D Following an avulsion fracture of the greater tubercle of the humerus, the humerus would primarily be: laterally rotated. medially rotated. abducted. flexed. extended. Following an avulsion fracture of the greater tubercle of the humerus, the humerus would primarily be: laterally rotated. medially rotated. abducted. flexed. extended. Answer: B In the emergency room you see a 65-year-old woman who fell on her outstretched right hand while walking on ice. Upon examination of the right limb, you feel and see a dorsal protrusion just proximal to the wrist. You suspect a: fractured lunate. fractured distal radius (Colles fracture). mid-radial fracture. dislocated first carpometacarpal joint. dislocated midcarpal joint. In the emergency room you see a 65-year-old woman who fell on her outstretched right hand while walking on ice. Upon examination of the right limb, you feel and see a dorsal protrusion just proximal to the wrist. You suspect a: fractured lunate. fractured distal radius (Colles fracture). mid-radial fracture. dislocated first carpometacarpal joint. dislocated midcarpal joint. Answer: B Which of the following is incorrect pertaining to the scaphoid? It articulates with the radius. It is the most frequently fractured carpal bone. Fracture is accompanied by pain along the lateral side of the wrist. A complication associated with fracture is avascular necrosis. It attaches to the flexor retinaculum. Which of the following is incorrect pertaining to the scaphoid? It articulates with the radius. It is the most frequently fractured carpal bone. Fracture is accompanied by pain along the lateral side of the wrist. A complication associated with fracture is avascular necrosis. It attaches to the flexor retinaculum. Answer: E The cephalic vein: becomes the brachial vein. becomes the axillary vein. originates on the medial side of the dorsal venous network at the wrist. pierces the clavipectoral fascia. empties into the subclavian vein. The cephalic vein: becomes the brachial vein. becomes the axillary vein. originates on the medial side of the dorsal venous network at the wrist. pierces the clavipectoral fascia. empties into the subclavian vein. Answer: D In the following axial MRI through the distal third of the arm, the brachial artery is labeled number 1 (see thin leader line on image). What is the structure indicated by the arrow? ulnar artery radial nerve cephalic vein short head of biceps tendon basilic vein In the following axial MRI through the distal third of the arm, the brachial artery is labeled number 1 (see thin leader line on image). What is the structure indicated by the arrow? ulnar artery radial nerve cephalic vein short head of biceps tendon basilic vein Answer: C You observe a physician perform a muscle test by having the patient abduct her arm 90 degrees and move the arm forward against resistance. What muscle (or part of a muscle) is the physician testing? middle deltoid subscapularis clavicular head of pectoralis major sternocostal head of pectoralis major serratus anterior You observe a physician perform a muscle test by having the patient abduct her arm 90 degrees and move the arm forward against resistance. What muscle (or part of a muscle) is the physician testing? middle deltoid subscapularis clavicular head of pectoralis major sternocostal head of pectoralis major serratus anterior Answer: C Following a left radical mastectomy, a woman is unable to abduct her arm more than 90 degrees. Which of the following structures do you suspect was injured during the surgical procedure? dorsal scapular nerve long thoracic nerve suprascapular nerve serratus posterior superior muscle rotator cuff component of the shoulder joint capsule Following a left radical mastectomy, a woman is unable to abduct her arm more than 90 degrees. Which of the following structures do you suspect was injured during the surgical procedure? dorsal scapular nerve long thoracic nerve suprascapular nerve serratus posterior superior muscle rotator cuff component of the shoulder joint capsule Answer: B The trapezius can perform all of the following functions except: protract the scapula. retract the scapula. elevate the scapula. depress the scapula. rotate the scapula. The trapezius can perform all of the following functions except: protract the scapula. retract the scapula. elevate the scapula. depress the scapula. rotate the scapula. Answer: A In which of the following activities would the latissimus dorsi be least important? using the crawl stroke while swimming using the backstroke while swimming using the breaststroke while swimming performing a chin-up paddling a canoe In which of the following activities would the latissimus dorsi be least important? using the crawl stroke while swimming using the backstroke while swimming using the breaststroke while swimming performing a chin-up paddling a canoe Answer: B Following a knife wound to the neck, you notice that the medial border of a patient's left scapula is located further from the midline than that of his right scapula. The nerve most likely injured by the wound is the: long thoracic. thoracodorsal. suprascapular. dorsal scapular. spinal accessory. Following a knife wound to the neck, you notice that the medial border of a patient's left scapula is located further from the midline than that of his right scapula. The nerve most likely injured by the wound is the: long thoracic. thoracodorsal. suprascapular. dorsal scapular. spinal accessory. Answer: D The arrow in the following radiograph points to the: clavicle. acromion process. coracoid process. superior angle of scapula. superior part of glenoid fossa. The arrow in the following radiograph points to the: clavicle. acromion process. coracoid process. superior angle of scapula. superior part of glenoid fossa. Answer: B Which of the following is incorrect pertaining to the supraspinatus muscle? It is innervated by a nerve that also supplies cutaneous innervation to the lateral surface of the proximal arm. It initiates the process of abduction of the arm. It is associated with painful abduction when the subacromial bursa is inflamed. It is one of four muscles comprising the rotator cuff. During arm abduction against resistance, the muscle can be palpated. Which of the following is incorrect pertaining to the supraspinatus muscle? It is innervated by a nerve that also supplies cutaneous innervation to the lateral surface of the proximal arm. It initiates the process of abduction of the arm. It is associated with painful abduction when the subacromial bursa is inflamed. It is one of four muscles comprising the rotator cuff. During arm abduction against resistance, the muscle can be palpated. Answer: A The cervicoaxillary canal: forms the base of the axilla. is bounded by the first rib, clavicle, and superior edge of the scapula. conducts the subclavian artery. leads to the quadrangular space. is occluded in a shoulder dislocation. The cervicoaxillary canal: forms the base of the axilla. is bounded by the first rib, clavicle, and superior edge of the scapula. conducts the subclavian artery. leads to the quadrangular space. is occluded in a shoulder dislocation. Answer: B Which of the following is incorrect pertaining to the axillary vein? If lacerated in the axilla, there is a risk of producing an air embolus. It is the vessel that is actually punctured in a typical "subclavian" vein puncture for catheter insertion. It lies deep to the axillary artery as the vessels cross the 1st rib. It is formed by the union of the brachial and basilic veins. It may receive blood from the inguinal region of the body. Which of the following is incorrect pertaining to the axillary vein? If lacerated in the axilla, there is a risk of producing an air embolus. It is the vessel that is actually punctured in a typical "subclavian" vein puncture for catheter insertion. It lies deep to the axillary artery as the vessels cross the 1st rib. It is formed by the union of the brachial and basilic veins. It may receive blood from the inguinal region of the body. Answer: C Which of the following is incorrect pertaining to lymphatic drainage of the upper limb? The apical axillary lymph nodes receive lymph from all the other axillary groups. The axillary nodes may be enlarged in breast cancer. The left humeral (lateral) axillary nodes receive lymph from both upper limbs. Metastatic spread to the axillary nodes may require excision of part of the axillary vein. Removal of the axillary nodes may result in lymphedema of the upper limb. Which of the following is incorrect pertaining to lymphatic drainage of the upper limb? The apical axillary lymph nodes receive lymph from all the other axillary groups. The axillary nodes may be enlarged in breast cancer. The left humeral (lateral) axillary nodes receive lymph from both upper limbs. Metastatic spread to the axillary nodes may require excision of part of the axillary vein. Removal of the axillary nodes may result in lymphedema of the upper limb. Answer: C In the following radiograph of the wrist, the arrow points to the: scaphoid. lunate. pisiform. articular disc. capitate. In the following radiograph of the wrist, the arrow points to the: scaphoid. lunate. pisiform. articular disc. capitate. Answer: A In the emergency room you examine a patient who was thrown from a motorcycle in such a way that, upon landing, his neck and shoulder were widely separated. Which of the following would not be consistent with your suspicion that he is suffering from Erb-Duchenne palsy? medially rotated arm at rest weak shoulder abduction weak elbow flexion sensory loss on lateral aspect of arm weak digital flexion In the emergency room you examine a patient who was thrown from a motorcycle in such a way that, upon landing, his neck and shoulder were widely separated. Which of the following would not be consistent with your suspicion that he is suffering from Erb-Duchenne palsy? medially rotated arm at rest weak shoulder abduction weak elbow flexion sensory loss on lateral aspect of arm weak digital flexion Answer: E Which of the following associations pertaining to the brachial plexus is incorrect? pre-fixed brachial plexus—compression of inferior trunk by 1st rib wounds in the posterior triangle of the neck—brachial plexus injuries acute brachial plexus neuritis—severe onset of shoulder pain hyperabduction syndrome—paresthesia inferior brachial plexus injuries—clawhand Which of the following associations pertaining to the brachial plexus is incorrect? pre-fixed brachial plexus—compression of inferior trunk by 1st rib wounds in the posterior triangle of the neck—brachial plexus injuries acute brachial plexus neuritis—severe onset of shoulder pain hyperabduction syndrome—paresthesia inferior brachial plexus injuries—clawhand Answer: A Which of the following reasons best explains why it is easier to do a "chin-up" (hands supinated) than a "pull-up" (hands pronated)? Because the brachialis is a less-effective elbow flexor in the pronated position. Because the biceps is a less-effective flexor in the pronated position. Because the brachioradialis is a less-effective flexor in the pronated position. Because the long digital flexors can better assist with elbow flexion in the supinated position. Because the humero-radial-ulnar joint is better aligned in the supinated position. Which of the following reasons best explains why it is easier to do a "chin-up" (hands supinated) than a "pull-up" (hands pronated)? Because the brachialis is a less-effective elbow flexor in the pronated position. Because the biceps is a less-effective flexor in the pronated position. Because the brachioradialis is a less-effective flexor in the pronated position. Because the long digital flexors can better assist with elbow flexion in the supinated position. Because the humero-radial-ulnar joint is better aligned in the supinated position. Answer: B The ridge indicated by the arrow in the following photograph overlies the tendon of which of the following muscles? palmaris longus palmaris brevis flexor carpi radialis flexor digitorum superficialis abductor pollicis longus The ridge indicated by the arrow in the following photograph overlies the tendon of which of the following muscles? palmaris longus palmaris brevis flexor carpi radialis flexor digitorum superficialis abductor pollicis longus Answer: C You examine a baseball pitcher who complains of weakened elbow flexion and has a rounded soft protuberance on the anterior surface of the distal part of his arm. Your most likely diagnosis is: a damaged musculocutaneous nerve in association with a "pulling" of the coracobrachialis. a ruptured long head of biceps tendon. a ruptured short head of biceps tendon. a ruptured brachialis tendon. an elbow dislocation. You examine a baseball pitcher who complains of weakened elbow flexion and has a rounded soft protuberance on the anterior surface of the distal part of his arm. Your most likely diagnosis is: a damaged musculocutaneous nerve in association with a "pulling" of the coracobrachialis. a ruptured long head of biceps tendon. a ruptured short head of biceps tendon. a ruptured brachialis tendon. an elbow dislocation. Answer: B You examine a patient with a horizontal, posterior, mid-humeral knife wound that reaches the bone. In addition to the muscular lesions, you expect the injury severed the: ulnar nerve and superior ulnar collateral artery. ulnar nerve and deep artery of the arm. radial nerve and humeral nutrient artery. radial nerve and deep artery of the arm. median nerve and brachial artery. You examine a patient with a horizontal, posterior, mid-humeral knife wound that reaches the bone. In addition to the muscular lesions, you expect the injury severed the: ulnar nerve and superior ulnar collateral artery. ulnar nerve and deep artery of the arm. radial nerve and humeral nutrient artery. radial nerve and deep artery of the arm. median nerve and brachial artery. Answer: D What is the correct order of structures in the cubital fossa from lateral to medial? brachial artery, median nerve, biceps tendon brachial artery, biceps tendon, median nerve median nerve, brachial artery, biceps tendon biceps tendon, brachial artery, median nerve biceps tendon, median nerve, brachial artery What is the correct order of structures in the cubital fossa from lateral to medial? brachial artery, median nerve, biceps tendon brachial artery, biceps tendon, median nerve median nerve, brachial artery, biceps tendon biceps tendon, brachial artery, median nerve biceps tendon, median nerve, brachial artery Answer: D In the following radiograph, what muscle attaches at the location indicated by the arrow? brachialis biceps brachii pronator teres brachioradialis anconeus In the following radiograph, what muscle attaches at the location indicated by the arrow? brachialis biceps brachii pronator teres brachioradialis anconeus Answer: B The brachioradialis: has a tendon that passes deep to the flexor retinaculum. attaches to the medial epicondyle of the humerus. is innervated by the radial nerve. acts at both the elbow and wrist joints. extends the elbow. The brachioradialis: has a tendon that passes deep to the flexor retinaculum. attaches to the medial epicondyle of the humerus. is innervated by the radial nerve. acts at both the elbow and wrist joints. extends the elbow. Answer: C You are assisting in the emergency room when the attending physician examines a patient after an elbow injury. The physician holds the proximal interphalangeal joint of the little finger and asks the patient to flex the distal phalanx. This procedure tests the functionality of what nerve? radial ulnar median posterior interosseous anterior interosseous You are assisting in the emergency room when the attending physician examines a patient after an elbow injury. The physician holds the proximal interphalangeal joint of the little finger and asks the patient to flex the distal phalanx. This procedure tests the functionality of what nerve? radial ulnar median posterior interosseous anterior interosseous Answer: B Which of the following is incorrect pertaining to the pronator quadratus? It is innervated by the anterior interosseous branch of the median nerve. It is the prime mover for pronation. It initiates the movement of pronation. It helps maintain the integrity of the interosseous membrane between the radius and ulna when upward thrusts are transmitted through the wrist. It can be palpated by deeply pressing an index finger two-thirds of the proximal-distal length of the forearm, at the middle of its ventral surface. Which of the following is incorrect pertaining to the pronator quadratus? It is innervated by the anterior interosseous branch of the median nerve. It is the prime mover for pronation. It initiates the movement of pronation. It helps maintain the integrity of the interosseous membrane between the radius and ulna when upward thrusts are transmitted through the wrist. It can be palpated by deeply pressing an index finger two-thirds of the proximal-distal length of the forearm, at the middle of its ventral surface. Answer: E Which of the following statements is incorrect pertaining to the extensors carpi radialis longus and brevis muscles? When only the two muscles act together, wrist extension and abduction is produced. When the two muscles act with the extensor carpi ulnaris, only wrist extension is produced. When the two muscles act with the flexor carpi ulnaris, only wrist abduction is produced. One of the muscles is innervated by the ulnar and the other by the deep branch of the radial nerve. Both attach to the humerus. Which of the following statements is incorrect pertaining to the extensors carpi radialis longus and brevis muscles? When only the two muscles act together, wrist extension and abduction is produced. When the two muscles act with the extensor carpi ulnaris, only wrist extension is produced. When the two muscles act with the flexor carpi ulnaris, only wrist abduction is produced. One of the muscles is innervated by the ulnar and the other by the deep branch of the radial nerve. Both attach to the humerus. Answer: D The ridge indicated by the arrow in the following photograph overlies the tendon of which of the following muscles? extensor pollicis longus extensor pollicis brevis abductor pollicis longus abductor pollicis brevis first dorsal interossei The ridge indicated by the arrow in the following photograph overlies the tendon of which of the following muscles? extensor pollicis longus extensor pollicis brevis abductor pollicis longus abductor pollicis brevis first dorsal interossei Answer: C Elbow tendonitis (tennis elbow) is associated with: inflammation of the periosteum of the lateral epicondyle of the humerus. inflammation of the medial collateral ligament. inflammation of the annular ligament. rupture of the tendon of the extensor digitorum. transient subluxation of the humero-radial-ulnar joint. Elbow tendonitis (tennis elbow) is associated with: inflammation of the periosteum of the lateral epicondyle of the humerus. inflammation of the medial collateral ligament. inflammation of the annular ligament. rupture of the tendon of the extensor digitorum. transient subluxation of the humero-radial-ulnar joint. Answer: A Which of the following is incorrect pertaining to the anatomic "snuffbox"? It is bounded anteriorly by the tendons of abductor pollicis longus and extensor pollicis brevis. It is bounded posteriorly by the tendon of extensor pollicis longus. The radial artery traverses its floor. The superficial branch of the radial nerve emerges from it. The radial styloid process can be palpated within it. Which of the following is incorrect pertaining to the anatomic "snuffbox"? It is bounded anteriorly by the tendons of abductor pollicis longus and extensor pollicis brevis. It is bounded posteriorly by the tendon of extensor pollicis longus. The radial artery traverses its floor. The superficial branch of the radial nerve emerges from it. The radial styloid process can be palpated within it. Answer: D In the following radiograph of the wrist of a 2.5-year-old child, the arrow points to the: scaphoid. trapezium. triquetrum. pisiform. epiphysis of the first metacarpal. In the following radiograph of the wrist of a 2.5-year-old child, the arrow points to the: scaphoid. trapezium. triquetrum. pisiform. epiphysis of the first metacarpal. Answer: B What is the clinical significance of a superficial ulnar artery? It often compresses the median nerve in the arm, producing paresthesia and muscle weakness. It is often pinched during elbow flexion, producing mild ischemia in the forearm muscles. Its superficial course in the cubital fossa results in it being mistakenly used for venipuncture. Its caliber is typically smaller than the normal ulnar artery and, under compromising situations, may be unable to provide sufficient blood to the hand. It accompanies the median nerve in the forearm and passes deep to the flexor retinaculum, resulting in hand ischemia in any patient suffering from carpal tunnel syndrome. What is the clinical significance of a superficial ulnar artery? It often compresses the median nerve in the arm, producing paresthesia and muscle weakness. It is often pinched during elbow flexion, producing mild ischemia in the forearm muscles. Its superficial course in the cubital fossa results in it being mistakenly used for venipuncture. Its caliber is typically smaller than the normal ulnar artery and, under compromising situations, may be unable to provide sufficient blood to the hand. It accompanies the median nerve in the forearm and passes deep to the flexor retinaculum, resulting in hand ischemia in any patient suffering from carpal tunnel syndrome. Answer: C Which of the following would not be associated with a complete section of the median nerve at the elbow? inability to flex both the proximal and the distal interphalangeal joints of digits 2 and 3 atrophy of thenar eminence muscles greatly weakened pronation loss of sensation on the lateral aspect of the palmar surface of the hand loss of ability to adduct the thumb Which of the following would not be associated with a complete section of the median nerve at the elbow? inability to flex both the proximal and the distal interphalangeal joints of digits 2 and 3 atrophy of thenar eminence muscles greatly weakened pronation loss of sensation on the lateral aspect of the palmar surface of the hand loss of ability to adduct the thumb Answer: E Which of the following would not be associated with a complete section of the ulnar nerve at the wrist? inability to abduct the little finger inability to grasp a piece of paper between the extended 4th and 5th digits inability to flex the metacarpophalangeal joint while extending interphalangeal joints of the 2nd digit clawhand loss of all sensation on the palmar aspect of the little finger Which of the following would not be associated with a complete section of the ulnar nerve at the wrist? inability to abduct the little finger inability to grasp a piece of paper between the extended 4th and 5th digits inability to flex the metacarpophalangeal joint while extending interphalangeal joints of the 2nd digit clawhand loss of all sensation on the palmar aspect of the little finger Answer: C "Wrist-drop" is associated with: unopposed action of the lumbricals and interossei. rupture of the extensor digitorum. avulsion of the olecranon. section of the radial nerve at the mid-humeral level. section of the superficial branch of the radial nerve. "Wrist-drop" is associated with: unopposed action of the lumbricals and interossei. rupture of the extensor digitorum. avulsion of the olecranon. section of the radial nerve at the mid-humeral level. section of the superficial branch of the radial nerve. Answer: D In the following coronal MRI of the hand, the arrow points to the: lumbrical. palmaris brevis. interossei. tendon of flexor digitorum profundus. tendon of extensor digitorum. In the following coronal MRI of the hand, the arrow points to the: lumbrical. palmaris brevis. interossei. tendon of flexor digitorum profundus. tendon of extensor digitorum. Answer: C Dupuytren contracture refers to: an abnormal spasticity in the flexor digitorum profundus tendons. an abnormal spasticity in the flexor pollicis longus tendons. a tightening of the flexor retinaculum that results in carpal tunnel syndrome. a tightening of the anterior skin of the hand, resulting in reduced mobility and an increase depth in the skin creases. a shortening and thickening of the palmar fascia of the hand, resulting in partial flexion of the digits. Dupuytren contracture refers to: an abnormal spasticity in the flexor digitorum profundus tendons. an abnormal spasticity in the flexor pollicis longus tendons. a tightening of the flexor retinaculum that results in carpal tunnel syndrome. a tightening of the anterior skin of the hand, resulting in reduced mobility and an increase depth in the skin creases. a shortening and thickening of the palmar fascia of the hand, resulting in partial flexion of the digits. Answer: E Opposition of the thumb: primarily involves rotation at the 1st metacarpophalangeal joint. primarily involves contraction of a muscle that lies deep to the abductor pollicis brevis. primarily involves contraction of a muscle that is innervated by the ulnar nerve. is a movement that requires lateral rotation of the thumb. is a movement that requires flexion of the thumb's interphalangeal joint. Opposition of the thumb: primarily involves rotation at the 1st metacarpophalangeal joint. primarily involves contraction of a muscle that lies deep to the abductor pollicis brevis. primarily involves contraction of a muscle that is innervated by the ulnar nerve. is a movement that requires lateral rotation of the thumb. is a movement that requires flexion of the thumb's interphalangeal joint. Answer: B Which of the following is correct pertaining to the interossei and lumbrical muscles of the hand? The palmar interossei, dorsal interossei, and lumbricals together can produce flexion at the metacarpophalangeal joints and extension at the interphalangeal joints. The palmar interossei, dorsal interossei, and lumbricals together can produce extension at the metacarpophalangeal joints and flexion at the interphalangeal joints. The palmar and dorsal interossei produce abduction of the fingers, whereas the lumbricals can produce adduction. The palmar interossei and lumbricals can produce adduction of the fingers, whereas the dorsal interossei can produce abduction. The dorsal interossei and lumbricals can produce abduction of the fingers, whereas the palmar interossei can produce adduction. Which of the following is correct pertaining to the interossei and lumbrical muscles of the hand? The palmar interossei, dorsal interossei, and lumbricals together can produce flexion at the metacarpophalangeal joints and extension at the interphalangeal joints. The palmar interossei, dorsal interossei, and lumbricals together can produce extension at the metacarpophalangeal joints and flexion at the interphalangeal joints. The palmar and dorsal interossei produce abduction of the fingers, whereas the lumbricals can produce adduction. The palmar interossei and lumbricals can produce adduction of the fingers, whereas the dorsal interossei can produce abduction. The dorsal interossei and lumbricals can produce abduction of the fingers, whereas the palmar interossei can produce adduction. Answer: A In the following angiogram of the wrist and hand, the arrow points to the: ulnar artery. radial artery. deep branch of the ulnar artery. superficial branch of the radial artery. princeps pollicis artery. In the following angiogram of the wrist and hand, the arrow points to the: ulnar artery. radial artery. deep branch of the ulnar artery. superficial branch of the radial artery. princeps pollicis artery. Answer: C You examine a patient who has a condition in which each time his index finger is flexed and extended, there is an audible "snap." Which of the following is the likely cause of this "trigger finger?" infection in the midpalmar space osteoarthritis of the metacarpophalangeal joint carpal tunnel syndrome thickening of the fibrous digital sheath and swelling of the flexor tendons calcification of the origin of the lumbrical muscle You examine a patient who has a condition in which each time his index finger is flexed and extended, there is an audible "snap." Which of the following is the likely cause of this "trigger finger?" infection in the midpalmar space osteoarthritis of the metacarpophalangeal joint carpal tunnel syndrome thickening of the fibrous digital sheath and swelling of the flexor tendons calcification of the origin of the lumbrical muscle Answer: D Which of the following is incorrect pertaining to carpal tunnel syndrome? It may involve weakness in the thenar muscles. It may involve anesthesia of the central palm. It may involve paresthesia in the lateral 3½ digits. It may be caused by inflammation of the synovial sheaths of the flexor tendons. Surgical transection of the flexor retinaculum typically relieves its associated symptoms. Which of the following is incorrect pertaining to carpal tunnel syndrome? It may involve weakness in the thenar muscles. It may involve anesthesia of the central palm. It may involve paresthesia in the lateral 3½ digits. It may be caused by inflammation of the synovial sheaths of the flexor tendons. Surgical transection of the flexor retinaculum typically relieves its associated symptoms. Answer: B A laceration of the thenar eminence that results in complete section of the recurrent branch of the median nerve would result in: claw hand. ape hand. loss of all ability to abduct the thumb. loss of all ability to adduct the thumb. loss of all ability to flex the metacarpophalangeal joint of the thumb. A laceration of the thenar eminence that results in complete section of the recurrent branch of the median nerve would result in: claw hand. ape hand. loss of all ability to abduct the thumb. loss of all ability to adduct the thumb. loss of all ability to flex the metacarpophalangeal joint of the thumb. Answer: B You examine a patient who is an avid bicycle rider. He complains of sensory loss on the medial side of his hands and you find some weakness in his intrinsic hand muscles, but not in any other muscle group. You suspect that: the patient used a hand posture that put excessive pressure on the superficial branch of his radial nerve. the patient used a hand posture that put excessive pressure on his ulnar nerve. repetitive wrist flexion and extension that occurred with braking caused swelling of the patient's long flexor tendons at the wrist. the patient's flexed trunk but extended neck posture during riding stressed his neck vertebrae so that osteophytes developed reducing the size of his C8/T1 intervertebral foramen. the patient probably has a cervical rib and that extended periods in the riding position resulted in inflammation around the nerves surrounding this structure. You examine a patient who is an avid bicycle rider. He complains of sensory loss on the medial side of his hands and you find some weakness in his intrinsic hand muscles, but not in any other muscle group. You suspect that: the patient used a hand posture that put excessive pressure on the superficial branch of his radial nerve. the patient used a hand posture that put excessive pressure on his ulnar nerve. repetitive wrist flexion and extension that occurred with braking caused swelling of the patient's long flexor tendons at the wrist. the patient's flexed trunk but extended neck posture during riding stressed his neck vertebrae so that osteophytes developed reducing the size of his C8/T1 intervertebral foramen. the patient probably has a cervical rib and that extended periods in the riding position resulted in inflammation around the nerves surrounding this structure. Answer: B Which of the following relationships at the wrist is incorrect? The median nerve lies deep to the tendon of the palmaris longus. The ulnar artery and nerve lie lateral to the tendon of the flexor carpi ulnaris. The radial artery can be compressed against the radius. The radial artery lies medial to the tendon of the flexor carpi radialis. The scaphoid can be palpated in the floor of the anatomical snuffbox. Which of the following relationships at the wrist is incorrect? The median nerve lies deep to the tendon of the palmaris longus. The ulnar artery and nerve lie lateral to the tendon of the flexor carpi ulnaris. The radial artery can be compressed against the radius. The radial artery lies medial to the tendon of the flexor carpi radialis. The scaphoid can be palpated in the floor of the anatomical snuffbox. Answer: D Scapulohumeral rhythm refers to: the changing articular configuration of the humeral head in the glenoid cavity with movement. the protective contractions of the rotator cuff muscles with humeral abduction. the protractive and retractive movements of the scapula that occur with humeral flexion and extension. the association between the movements at the glenohumeral and acromioclavicular joints. the relationship between movements at the glenohumeral and scapulothoracic "joints" during humeral abduction. Scapulohumeral rhythm refers to: the changing articular configuration of the humeral head in the glenoid cavity with movement. the protective contractions of the rotator cuff muscles with humeral abduction. the protractive and retractive movements of the scapula that occur with humeral flexion and extension. the association between the movements at the glenohumeral and acromioclavicular joints. the relationship between movements at the glenohumeral and scapulothoracic "joints" during humeral abduction. Answer: E The sternoclavicular joint: is less likely to dislocate than the clavicle is to fracture in falls on the outstretched hand. is a symphysis. can ankylose (stiffen) without causing significant loss in shoulder mobility. is dependent on muscles for its integrity. involves the clavicle, sternum, and first two costal cartilages. The sternoclavicular joint: is less likely to dislocate than the clavicle is to fracture in falls on the outstretched hand. is a symphysis. can ankylose (stiffen) without causing significant loss in shoulder mobility. is dependent on muscles for its integrity. involves the clavicle, sternum, and first two costal cartilages. Answer: A In the following MRI of the proximal forearm, the arrow points to the: brachioradialis. anconeus. extensor digitorum. flexor digitorum profundus. supinator. In the following MRI of the proximal forearm, the arrow points to the: brachioradialis. anconeus. extensor digitorum. flexor digitorum profundus. supinator. Answer: E You examine a young male patient whose shoulder was injured during a football game. You immediately notice that his acromion process is abnormally prominent and inferior to the acromial end of the clavicle. You diagnose: an anteriorly dislocated glenohumeral joint. a posteriorly dislocated glenohumeral joint. a dislocated acromioclavicular joint with intact coracoclavicular ligaments. a dislocated acromioclavicular joint with torn coracoclavicular ligaments. a torn rotator cuff. You examine a young male patient whose shoulder was injured during a football game. You immediately notice that his acromion process is abnormally prominent and inferior to the acromial end of the clavicle. You diagnose: an anteriorly dislocated glenohumeral joint. a posteriorly dislocated glenohumeral joint. a dislocated acromioclavicular joint with intact coracoclavicular ligaments. a dislocated acromioclavicular joint with torn coracoclavicular ligaments. a torn rotator cuff. Answer: D The surface elevation identified by the arrow in the following photograph is caused by which of the following muscles? subscapularis trapezius long head of triceps serratus anterior teres major The surface elevation identified by the arrow in the following photograph is caused by which of the following muscles? subscapularis trapezius long head of triceps serratus anterior teres major Answer: E The nerve most likely to be injured in a glenohumeral joint dislocation is the: radial. medial. ulnar. axillary. supraclavicular. The nerve most likely to be injured in a glenohumeral joint dislocation is the: radial. medial. ulnar. axillary. supraclavicular. Answer: D In the emergency room you examine a young girl who is "protecting" her right upper limb by holding it while maintaining the elbow flexed and forearm pronated. The patient's father related that the patient was misbehaving as the school bus door opened and he inadvertently jerked her up by the hand to lift her onto the bus. You order a series of upper limb radiographs but are fairly certain the injury is: a ruptured biceps tendon. a ruptured pectoralis major tendon. a dislocated (subluxed) radial head. an avulsed lesser tubercle. an avulsed medial humeral condyle. In the emergency room you examine a young girl who is "protecting" her right upper limb by holding it while maintaining the elbow flexed and forearm pronated. The patient's father related that the patient was misbehaving as the school bus door opened and he inadvertently jerked her up by the hand to lift her onto the bus. You order a series of upper limb radiographs but are fairly certain the injury is: a ruptured biceps tendon. a ruptured pectoralis major tendon. a dislocated (subluxed) radial head. an avulsed lesser tubercle. an avulsed medial humeral condyle. Answer: C Which of the following is incorrect pertaining to the wrist joint or wrist bones? Movements at the wrist joint proper (radiocarpal joint) are augmented by movements at the midcarpal and intercarpal joints. The joint involves the radius, articular disk, and all of the carpal bones in the proximal row except the pisiform. Branches of the median, ulnar, and radial nerves supply the joint. Fracture of the lunate is common in children and typically heals well because of multiple sources of blood. Fracture-separation of the distal radial epiphysis is common in children and typically heals well when reduced. Which of the following is incorrect pertaining to the wrist joint or wrist bones? Movements at the wrist joint proper (radiocarpal joint) are augmented by movements at the midcarpal and intercarpal joints. The joint involves the radius, articular disk, and all of the carpal bones in the proximal row except the pisiform. Branches of the median, ulnar, and radial nerves supply the joint. Fracture of the lunate is common in children and typically heals well because of multiple sources of blood. Fracture-separation of the distal radial epiphysis is common in children and typically heals well when reduced. Answer: D The abnormal condition shown in the following photograph is associated with paralysis of the: serratus anterior. rhomboids. latissimus dorsi. serratus posterior superior. subscapularis. The abnormal condition shown in the following photograph is associated with paralysis of the: serratus anterior. rhomboids. latissimus dorsi. serratus posterior superior. subscapularis. Answer: A Essential Clinical Anatomy 4th edition Chapter 6 Upper Limb PowerPoint Quiz