Involuntary sleep-related erections occur once each night in healthy men
Indicate whether the statement is true or false
F
Psychology
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During sleep, periods of rapid eye movement (REM) alternate with non-REM sleep in a cycle that recurs about every ________
a. 30 minutes. b. 50 minutes. c. 60 minutes. d. 90 minutes.
Psychology
The __________ serve(s) to amplify sound as it reaches the middle ear
a) ossicles b) hair cells c) tympanic membrane d) cochlea
Psychology