Asked by Alfred Bassaw on Apr 29, 2024
Verified
When we are exposed to low levels of light the __________ begins to secrete the hormone melatonin, which acts to induce sleep.
A) thyroid gland
B) pituitary gland
C) pineal gland
D) adrenal glands
Pineal Gland
A small endocrine gland in the brain, secreting melatonin and involved in regulating sleep patterns.
Thyroid Gland
The endocrine gland that produces thyroxine and regulates metabolism.
Pituitary Gland
A pea-sized gland located at the base of the brain that produces hormones which regulate important bodily functions, including growth, metabolism, and reproduction.
- Comprehend the purpose and activity of melatonin within the sleep-wake cycle.
- Explain how exposure to light impacts the circadian rhythm.
Verified Answer
ZK
Zybrea KnightMay 05, 2024
Final Answer :
C
Explanation :
The pineal gland is responsible for secreting the hormone melatonin, which helps to regulate our sleep-wake cycle. When we are exposed to low levels of light, such as in the evening or at night, the pineal gland begins to secrete more melatonin, which can make us feel sleepy and ready for bed.
Learning Objectives
- Comprehend the purpose and activity of melatonin within the sleep-wake cycle.
- Explain how exposure to light impacts the circadian rhythm.