Which vitamin is required for the normal synthesis of collagen?
A. Vitamin D
B. Vitamin B
C. Vitamin A
D. Vitamin C
E. Vitamin K
D
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The rods in the eye:
a. are part of the choroid layer b. respond to the colors red, green, and blue c. are used to see in dim light d. both A and B above
Which is the only cranial nerve to leave the head and neck region?
A) V B) VII C) X D) XII
The wall of the left ventricle is thicker than the wall of the right ventricle because the
a. left ventricle must pump much more blood than the right ventricle so it must have stronger walls. b. right ventricle must pump much more blood than the left ventricle so it has a larger chamber to accommodate the blood and a correspondingly thinner wall. c. left ventricle must pump the same amount of blood into the high-resistance, high-pressure systemic system as does the right ventricle into the low-resistance, low-pressure pulmonary system. d. right ventricle must create higher tension within its walls. e. left ventricle must pump oxygenated blood, which requires more energy than pumping unoxygenated blood.
The superficial palmar arch is formed by the union of
A) the radial and ulnar arteries B) branches of the mesenteric vessels C) the internal carotid arteries and the basilar artery D) the branches of the tibial arteries