Kevin just reached orgasm and finds he is unable to get an erection again. Although this greatly concerns him, it is actually a normal phenomenon known as
a) a plateau.
b) dyspareunia.
c) vasocongestion.
d) the refractory period.
D
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Clogged arteries are to ______ as hardened arteries are to ______.
A. arteriosclerosis; atherosclerosis B. myocardial infarction; angina C. atherosclerosis; arteriosclerosis D. angina; myocardial infarction
The nodes of Ranvier are:
a. a network of fibers within the medulla associated with attention and alertness b. tiny areas on the surface of the soma that are sensitive to neurotransmitters c. small sacs found in the axon terminal that store neurotransmitters d. gaps in the myelin sheath that allow the neural signal to travel at a greater speed
Remembering to do things in the future is called _____ memory.
A) prospective B) semantic C) anterograde D) source
By the end of the preschool period, the __________, a bundle of nerve fibers that connect the two hemispheres of the brain, becomes considerably thicker
a. myelination c. corpus callosum b. dendrite d. medulla