_______, formerly known as impotence, is the persistent and recurrent inability to maintain an erection.
a. male orgasmic disorder
b. erectile disorder
c. sexual fatigue
d. premature ejaculation
Answer: b. erectile disorder
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What evidence has been cited by scientists who propose that alcoholism is related to endogenous opioid production?
a. Alcohol is an opioid derivative. b. Rats given morphine refuse alcohol. c. The symptoms of withdrawal from alcohol and heroin are similar. d. Opioid-antagonists can reduce the subjective "high" of drinking.
Richard experienced a quantum personality change about 10 years ago. If his experience is typical, Richard's change in personality has:
A. continued B. reverted back to how he was before the change C. intensified D. become more unstable with large fluctuations in personality
Light striking the retina passes through which layer of cells first?
a. Ganglion cells b. Bipolar cells c. Horizontal cells d. Rods and cones e. Amacrine cells
Ann has been taking sleeping pills for several months. What is the likely effect of the sleeping pills at this point?
a) They work more quickly each night. b) They induce more drowsiness each day. c) They tend to produce higher levels of dreaming. d) They lost their effectiveness as the body adjusted to them.