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Dime Dime
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7 years ago
At each end of the muscle, the collagen fibers of the epimysium, perimysium, and endomysium, come together to form a
 A) tendon.
  B) satellite cell.
  C) ligament.
  D) tenosynovium.
  E) sheath.



(Question 2) Which of the following is a recognized function of skeletal muscle?
 A) produce movement
  B) maintain posture
  C) maintain body temperature
  D) guard body entrances and exits
  E) All of the answers are correct.



(Question 3) Muscle tissue, one of the four basic tissue groups, consists chiefly of cells that are highly specialized for
 A) conduction.
  B) contraction.
  C) peristalsis.
  D) cushioning.
  E) secretion.



(Question 4) How are osteoarthritis and rheumatoid arthritis different?



(Question 5) A high school student comes to the emergency room complaining of persistent pain and stiffness in her shoulder joint. In talking with her, you discover that she has been spending many hours trying to improve her pitching skills for her school's softball team. What is likely causing the pain?



(Question 6) Why is the inferior region of the shoulder joint most vulnerable to dislocation?



(Question 7) When the triceps brachii muscle contracts, what movements does it produce?



(Question 8) Explain how the structure of synovial fluid allows it to function as a lubricant in a joint.



(Question 9) The most common type of joint inflammation is called
 A) rheumatism.
  B) degenerative joint disease.
  C) rheumatoid arthritis.
  D) osteoporosis.
  E) gouty arthritis.



(Question 10) In ________ an autoimmune response attacks joints and causes an inflammation condition.
 A) rheumatism
  B) degenerative joint disease
  C) rheumatoid arthritis
  D) osteoporosis
  E) gouty arthritis
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wrote...
7 years ago
1) A

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2) E

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3) B

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4) Osteoarthritis is a wear-and-tear disease seen usually in the elderly. Rheumatoid arthritis is an autoimmune disease in which the body's immune system attacks synovial joints, triggered by an infection or some other cause.

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5) Her pain is probably caused by injury to the rotator cuff, which can result from repetitive motion, trauma, or excessive force. The rotator cuff consists of the tendons of four muscles that stabilize the shoulder joint. If torn, surgical repair may be indicated.

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6) The anterior, superior, and posterior surfaces of the shoulder joint are reinforced by ligaments, muscles, and tendons, but the inferior capsule is poorly reinforced. As a result, a dislocation caused by an impact or a violent muscle contraction is most likely to occur at this site. Such a dislocation can tear the inferior capsular wall and the glenoid labrum.

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7) The triceps brachii attaches to the olecranon process. Contraction of the triceps brachii muscle causes the ulna to rotate around the distal humerus, causing extension of the forearm.

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8) Synovial fluid is a viscous fluid like egg white or molasses and made up of proteoglycans and hyaluranon. It is absorbed by the sponge-like articular cartilage of joints and creates a slick film on the surfaces that reduces friction.

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9) B

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10) C
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