In the diagram, what is the basic functional unit of a myofibril?
a) B
b) C
c) F
d) Both B and C
e) All of these choices are correct.
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Question 2) Capillaries are also referred to as
a) exchange vessels.
b) vasoconstrictors.
c) vasodilators.
d) pressure reservoirs.
e) distributing vessels.
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Question 3) Parathyroid hormone is the major regulator of the plasma concentration of which of the following ions?
a) Calcium
b) Sodium
c) Potassium
d) Chloride
e) Manganese
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Question 4) The superior mesenteric ganglion receives nervous input from the
a) lesser splanchnic nerve.
b) least splanchnic nerve.
c) greater thoracic splanchnic nerve
d) a and b only
e) a, b, and c
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Question 5) Which of the types of receptors listed below is primarily used for detecting light rays under bright light conditions?
a) olfactory hair cells
b) rods
c) cones
d) ganglion neurons
e) amacrine cells
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Question 6) Which of the following types of movement is shown in diagram E?
a) supination
b) circumduction
c) pronation
d) rotation
e) adduction
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Question 7) Blood leaving the left ventricle passes through which of the following structures?
a) Right atrium
b) Interventricular septum
c) Bicuspid valve
d) Aortic semilunar valve
e) Pulmonary semilunar valve
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Question 8) Which of the labeled structures carries exclusively motor information away from the spinal cord?
a) B
b) C
c) F
d) G
e) H
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Question 9) Which of the following blood cells is involved in reducing blood loss from a damaged blood vessel?
a) Erythrocyte
b) Platelet
c) Lymphocyte
d) Basophil
e) Neutrophil
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Question 10) Which of the following labeled structures in the diagram are concentric lamellae?
a) A
b) B
c) C
d) D
e) G
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