Asked by Carly Lavery on May 19, 2024
Verified
The suprachiasmatic nucleus is a pair of cell clusters in the ________ that controls circadian rhythm.
A) pineal gland
B) brainstem
C) motor cortex
D) hypothalamus
Suprachiasmatic Nucleus
A part of the brain located in the hypothalamus that regulates circadian rhythms.
Circadian Rhythm
A natural, internal process that regulates the sleep-wake cycle and repeats roughly every 24 hours, affecting physical, mental, and behavioral changes in living organisms.
Pineal Gland
A small, pine-cone-shaped endocrine gland in the brain that produces and secretes the hormone melatonin, which regulates sleep patterns.
- Understand the role of the suprachiasmatic nucleus in controlling the circadian rhythm.
Verified Answer
SN
Sanjeev NayakMay 23, 2024
Final Answer :
D
Explanation :
The suprachiasmatic nucleus (SCN) is located in the hypothalamus, specifically above the optic chiasm. It is responsible for regulating the body's circadian rhythm, or 24-hour sleep-wake cycle.
Learning Objectives
- Understand the role of the suprachiasmatic nucleus in controlling the circadian rhythm.