Questions: Which gland is thought to play a role in establishing 24-hour circadian rhythms? Pineal gland Thyroid gland Hypothalamus Pituitary gland

Which gland is thought to play a role in establishing 24-hour circadian rhythms? Pineal gland Thyroid gland Hypothalamus Pituitary gland

Transcript text: McGraw Hill - Connect Question Mode: Multiple Choic learning.mheducation.com/static/awd/index.html?_t=1727548169678\#/ Mc graw 5 of 102 Concepts completed Multiple Choice Question Which gland is thought to play a role in establishing 24 -hour circadian rhythms? Pineal gland Thyroid gland Hypothalamus Pituitary gland Need help? Review these concept resources. Rate your confidence to submit your answer. High Medium Low (c) 2024 McGraw Hill, All Rights Reserved. Privacy Center Terms of $U$ :

Solution

The answer is the first one: Pineal gland.

Explanation for each option:

Pineal gland: This gland is known for producing melatonin, a hormone that helps regulate sleep-wake cycles and circadian rhythms. It is directly involved in the establishment of 24-hour circadian rhythms, making it the correct answer.
Thyroid gland: This gland primarily regulates metabolism and does not play a direct role in establishing circadian rhythms.
Hypothalamus: While the hypothalamus is involved in regulating various bodily functions, including sleep, it is not the primary gland responsible for establishing circadian rhythms. It does, however, work closely with the pineal gland.
Pituitary gland: This gland is known as the "master gland" because it controls other glands in the endocrine system, but it is not directly responsible for circadian rhythms.

In summary, the pineal gland is the correct answer as it plays a crucial role in regulating circadian rhythms through the production of melatonin.

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