.Circadian rhythms are controlled by a biological clock,located in a teardrop-shaped cluster of cells in the:
A)hypothalamus.
B)thalamus.
C)corpus callosum.
D)occipital lobe.

Question

Quizplus · Accepted Answer

The biological clock that controls circadian rhythms is located in the hypothalamus, specifically in a region called the suprachiasmatic nucleus (SCN). The hypothalamus is a brain structure located near the base of the brain that is involved in regulating many important bodily functions, including sleep, hunger, and thirst. The thalamus is also a brain structure located in the middle of the brain, but it is not directly involved in regulating circadian rhythms. The corpus callosum is a bundle of nerve fibers that connects the left and right hemispheres of the brain and is not involved in the regulation of circadian rhythms. The occipital lobe is a region of the brain involved in visual processing and is not directly involved in controlling circadian rhythms.

Circadian Rhythms Are Controlled by a Biological Clock,located in a Teardrop-Shaped