Vasodilation of coronary arteries is induced by
a. adenosine
b. nitroglycerin
c. nitric oxide
d. all of the above
e. only a and b
D
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In the condition known as ________, the wall of an artery becomes thicker and stiffer
A) arthritis B) arteriosclerosis C) stenosis D) atherosclerosis E) multiple sclerosis
A deficiency of hormone results in an increase in the number of receptors for that hormone. This is known as _____ and results in _____.
A) Negative feedback. Increased response to the hormone. B) Down-regulation. Decreased sensitivity to the hormone. C) Positive feedback. Decreased response to the hormone. D) Up-regulation. Increased sensitivity to the hormone.
Secondary sex characteristics of females are stimulated by:
A.)testosterone. B.)estrogens. C.)aldosterone. D.)androgens.
Ligand-gated ion channels bind ___ that have diffused across a synaptic cleft.
Fill in the blank(s) with the appropriate word(s).