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Biology (MindTap Course List)

11th Edition
Eldra Solomon + 3 others
Publisher: Cengage Learning
ISBN: 9781337392938
BuyFind

Biology (MindTap Course List)

11th Edition
Eldra Solomon + 3 others
Publisher: Cengage Learning
ISBN: 9781337392938

Solutions

Chapter
Section
Chapter 42, Problem 4TYU
Textbook Problem

The suprachiasmatic nucleus (a) secretes melatonin (b) stimulates long-term potentiation (LTP) in the hippocampus (c) filters incoming sensory information and determines whether it is threatening (d) is critical in memory consolidation (e) is important in regulating the sleep–wake cycle

Expert Solution
Summary Introduction

Introduction: Brain is divided into different parts that perform different functions in the neural system of the body. Some parts are associated with maintaining posture, while other parts are involved in maintaining the biological clock of the body. This biological clock is responsible for maintaining the periodic activities in the body. Specific area of the brain is responsible for proper working of this biological clock. When a person moves from one location to another, the brain takes some time to reset the body’s biological clock according to the new atmosphere.

Explanation of Solution

Reason for correct answer:

The suprachiasmatic nucleus is one of the important biological clocks in the human body. Information from the retina about the light and dark periods is received by the suprachiasmatic nucleus and passed on to other parts of the brain. This information of the light and dark periods helps in maintaining the sleep–wake cycle of the body. Damage or improper functioning of suprachiasmatic nucleus affects receiving the information regarding the photo period and thus disturbing the sleep–wake cycle. It is directly involved in regulating the sleep–wake cycle of the body.

Option (e) is given as “is important in regulating the sleep–wake cycle”

The suprachiasmatic nucleus is the biological clock of the human body that regulates the sleep–wake cycle of the body. Hence, the correct answer is option (e).

Reasons for incorrect answers:

Option (a) is given as “secretes melatonin”

Melatonin is secreted by the pineal gland...

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Chapter 42 Solutions

Biology (MindTap Course List)
Show all chapter solutions
Ch. 42.3 - Compare the brain of a mammal with the brain of an...Ch. 42.4 - Describe the structure and functions of the human...Ch. 42.4 - Describe the structure and functions of the human...Ch. 42.4 - Summarize the sleepwake cycle and contrast rapid...Ch. 42.4 - Describe the actions of the limbic system; include...Ch. 42.4 - Summarize how the brain processes information;...Ch. 42.4 - How is the human CNS protected? What is the...Ch. 42.4 - What are two main functions of the vertebrate...Ch. 42.4 - VISUALIZE Draw a lateral view of the human brain...Ch. 42.4 - What role does the limbic system play in emotions?...Ch. 42.4 - In what ways does your success on a biology exam...Ch. 42.5 - Describe the organization of the peripheral...Ch. 42.5 - Contrast the sympathetic and parasympathetic...Ch. 42.5 - Compare the function of the somatic division of...Ch. 42.5 - Contrast the sympathetic and parasympathetic...Ch. 42.6 - Distinguish among psychological dependence,...Ch. 42.6 - How do the following drugs affect the CNS:...Ch. 42 - Test your Understanding Know and Comprehend A...Ch. 42 - Which part of the vertebrate brain maintains...Ch. 42 - The main association area in the amphibian brain...Ch. 42 - The suprachiasmatic nucleus (a) secretes melatonin...Ch. 42 - The heart rate is slowed by (a) sympathetic nerves...Ch. 42 - Amphetamines (a) affect neurons in the mesolimbic...Ch. 42 - Which sequence best describes transmission of...Ch. 42 - Test Your Understanding 8. VISUALIZE Label the...Ch. 42 - EVOLUTION LINK What general trends can you...Ch. 42 - Test Your Understanding Evaluate and Synthesize...Ch. 42 - Test Your Understanding 11. What is the adaptive...Ch. 42 - EVOLUTION LINK CREB has been shown to be a...Ch. 42 - Hypothesize a possible relationship between...

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