Question

Which of the following is most accurate about a typical night's sleep?


A) The sleep cycle repeats itself every 60 minutes.
B) During REM sleep the muscles are tense and brain waves reveal deep relaxation.
C) As sleep progresses, Stage 3 and Stage 4 sleep diminish while REM sleep increases.
D) Most of a night's sleep is spent in Stage 4 and REM.
E) Everyone needs 8 hours of sleep per night.

Answer 1

It's between C or A.

Answer 2

a sleep cycle is 90 minutes
bharacterized by the rapid and random movement of the eyes
REM sleep normally occurs close to morning
Criteria for REM sleep includes rapid eye movement, but also low muscle tone and a rapid, low-voltage EEG
REM sleep in adult humans typically occupies 20–25% of total sleep, about 90–120 minutes of a night's sleep.
During a normal night of sleep, humans usually experience about four or five periods of REM sleep; they are quite short at the beginning of the night and longer toward the end.
Subjects' vividly recalled dreams mostly occur during REM sleep.

Answer 3

babies require more sleep sleep requirement decreases with age

Answer 4

C. As sleep progresses, stage 3 and stage 4 sleep diminish, while REM sleep increases.
Stage 3 and stage 4 are considered deep sleep. As the night progresses, REM sleep periods increase in length , while deep sleep decreases.

Answer 5

the answer is
C) As sleep progresses, Stage 3 and Stage 4 sleep diminish while REM sleep increases.