The SCN is active during the
A) day for diurnal species and during the night for nocturnal species.
B) day for nocturnal species and during the night for diurnal species.
C) day for both diurnal and nocturnal species.
D) night for both diurnal and nocturnal species.

Question

Quizplus · Accepted Answer

The Suprachiasmatic Nucleus (SCN) acts as the primary circadian clock in mammals, regulating sleep-wake cycles and other rhythmic physiological functions. It is active during the day for both diurnal (day-active) and nocturnal (night-active) species, as it responds to light signals to synchronize the body's internal clock with the external environment.

The SCN Is Active During the