Visual inputs to the ________ serve to synchronize biorhythms with natural light and dark.
A) suprachiasmatic nucleus
B) superior colliculi
C) lateral geniculate body
D) pretectal nuclei

Question

Quizplus · Accepted Answer

The suprachiasmatic nucleus (SCN) is a small region in the hypothalamus of the brain that is responsible for regulating circadian rhythms, including our sleep-wake cycle. Visual inputs from the eyes, particularly from specialized photoreceptor cells called melanopsin-containing retinal ganglion cells, travel through the optic nerves to the SCN. These inputs help to synchronize our biorhythms with the natural light-dark cycle of the environment, helping us to maintain a consistent sleep schedule. The other options listed (B, C, D) are involved in visual processing, but not specifically in regulating biorhythms.

Visual Inputs to the ________ Serve to Synchronize Biorhythms with Natural