What is the pacemaker of the heart?
A) AV node
B) SA node
C) bundle of His
D) Purkinje fibers
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Question 2) Compact bone is organized into bony columns called ________.
A) osteons
B) lamellae
C) canaliculi
D) lacunae
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Question 3) Bile produced in the liver is transported to the gallbladder for storage via the ________.
A) falciform ligament
B) cystic duct
C) common bile duct
D) common hepatic duct
E) pancreatic duct
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Question 4) Which vessels collect deoxygenated blood from the myocardium?
A) coronary arteries
B) cardiac veins
C) atrial arteries
D) marginal arteries
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Question 5) Identify the left medial lobe of the liver in the following figure.
A) A
B) B
C) C
D) D
E) E
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Question 6) The left coronary artery supplies blood to all the following EXCEPT the ________.
A) interventricular septum
B) left atrium
C) left ventricle
D) right atrium
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Question 7) In cats, the liver is divided into ________ lobes, while in humans there are ________.
A) three; four
B) four; three
C) four; five
D) five; two
E) five; four
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Question 8) In bone, rings of matrix called ________ surround a central canal that contains blood vessels.
A) osteoblasts
B) canaliculi
C) concentric lamellae
D) osteoclasts
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Question 9) What are the first vessels to branch off of the base of the ascending aorta and penetrate the myocardium of the heart wall?
A) None of the listed responses is correct.
B) anterior interventricular artery
C) cardiac veins
D) coronary arteries
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Question 10) Which type of cartilage is associated with the external ear?
A) elastic
B) hyaline
C) fibrocartilage
D) areolar tissue
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