At low levels, alcohol's effect on the brain is __________; at higher levels, alcohol's effect is __________.
A. to inhibit glutamate (an excitatory neurotransmitter); to release opiumlike endorphins
B. too minimal to have an impact; massive and excitatory
C. depressive; excitatory
D. to activate the brain's "pleasure centers"; to depress brain functioning
Answer: D
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Bobby and Sue were parked at Lover's Lane. When Bobby kissed Sue, his breathing accelerated. Sue always wore Chanel 5 when she went out with Bobby. Whenever Bobby smelled Chanel 5, he began to breathe faster. Sue's kiss was the:
kiss was the: a. US. b. UR. c. CS. d. CR.
Dr. Camby is in her sleep lab observing a patient in the next room. The patient is wired to an EEG machine and the readings are just beginning to register about 20% delta waves. Dr. Camby's patient is entering __________
a) REM sleep. b) stage 1 sleep. c) stage 2 sleep. d) stage 3 sleep.