The circadian rhythm is influenced by light-sensitive retinal proteins that trigger signals to the
A) suprachiasmatic nucleus.
B) hippocampus.
C) amygdala.
D) brainstem.

Question

Quizplus · Accepted Answer

Light-sensitive retinal proteins send signals to the suprachiasmatic nucleus, which is the master clock that regulates the circadian rhythm. The hippocampus and amygdala are involved in memory and emotions, respectively, but not in regulating the circadian rhythm. The brainstem is involved in regulating basic life functions such as breathing and heart rate, but not specifically in regulating the circadian rhythm.

The Circadian Rhythm Is Influenced by Light-Sensitive Retinal Proteins That