Explanation The pineal gland has some degree of photosensitivity. In mammals, it is not directly affected by light because it is located deep inside the brain. However, the photoreceptors in the eyes connect to the pineal gland. In mammals, melatonin, which is a peptide hormone, is secreted by the pineal gland. This hormone maintains the biological clock. Signals are generated when light hits the eyes which, inhibits the secretion of melatonin. The hormone, melatonin is secreted during the period of darkness...

4th Edition

ISBN: 9781337246422

Author: Peter J. Russell; Paul E. Hertz; Beverly McMillan

Publisher: Cengage Learning US

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Question

Chapter 42, Problem 12TYK

Summary Introduction

To review:

The side effects that a woman might experience after the removal of the pineal gland.

Introduction:

The pineal gland is an endocrine gland, which is attached to the hypothalamus and is present in the brain. The direct mechanical control for the pineal gland is done by the suprachiasmatic nucleus of the hypothalamus. The suprachiasmatic nucleus of the hypothalamus releases the melatonin hormone, which regulates the biological clock.

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Chapter 42 Solutions

Biology: The Dynamic Science

Ch. 42.1 - What is the difference between a hormone and an...Ch. 42.1 - How is endocrine signaling different from...Ch. 42.2 - Prob. 1SB Ch. 42.2 - Prob. 2SB Ch. 42.3 - Prob. 1SB Ch. 42.3 - Prob. 2SB Ch. 42.4 - What effect does parathyroid hormone have on the...Ch. 42.4 - Prob. 2SB Ch. 42.4 - Prob. 3SB Ch. 42.4 - Prob. 4SB

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Solution Summary: The author explains that the pineal gland is an endocrine gland attached to the hypothalamus and is present in the brain. The suprachiasmatic nucleus releases the melatonin hormone, which

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