Internally generated cycles lasting about 24 hours a day that regulate sleep and wake cycles,as well as hormone secretion,are called
A) sleep disorders.
B) circadian rhythms.
C) REM periods.
D) astral projections.

Question

Quizplus · Accepted Answer

Circadian rhythms are internally generated cycles lasting about 24 hours a day that regulate sleep and wake cycles, as well as hormone secretion. Sleep disorders refer to conditions that affect the quality, timing, and amount of sleep. REM periods refer to the stage of sleep where rapid eye movements occur, and astral projections refer to a belief in a separation of consciousness from the physical body.

Internally Generated Cycles Lasting About 24 Hours a Day That