Textbook Question
Which of the effects listed in response to question 9 would be reversed by parasympathetic activity?
Ch. 14 The Autonomic Nervous System
Marieb, Hoehn7th EditionHuman Anatomy & PhysiologyISBN: 9780805359091
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Table of contents
- Ch. 1 The Human Body: An Orientation24
- Ch. 2 Chemistry Comes Alive25
- Ch. 3 Cells: The Living Units24
- Ch. 4 Tissue: The Living Fabric19
- Ch. 5 The Integumentary System10
- Ch. 6 Bones and Skeletal Tissues19
- Ch. 7 The Skeleton11
- Ch. 8 Joints7
- Ch. 9 Muscles and Muscle Tissue26
- Ch. 10 The Muscular System26
- Ch. 11 Fundamentals of the Nervous System and Nervous Tissue23
- Ch. 12 The Central Nervous System26
- Ch. 13 The Peripheral Nervous System and Reflex Activity28
- Ch. 14 The Autonomic Nervous System18
- Ch. 16 The Endocrine System26
- Ch. 17 Blood27
- Ch. 18 The Cardiovascular System: The Heart22
- Ch. 19 The Cardiovascular System: Blood Vessels27
- Ch. 20 The Lymphatic System and Lymphoid Organs and Tissues16
- Ch. 21 The Immune System: Innate and Adaptive Body Defenses29
- Ch. 22 The Respiratory System20
- Ch. 23 The Digestive System30
- Ch. 24 Nutrition, Metabolism, and Energy Balance26
- Ch. 25 The Urinary System25
- Ch. 26 Fluid, Electrolyte, and Acid-Base Balance24
- Ch. 27 The Reproductive System23
Marieb, Hoehn7th EditionHuman Anatomy & PhysiologyISBN: 9780805359091Not the one you use?Change textbook
Chapter 14, Problem 12
Describe the importance of the hypothalamus in controlling the autonomic nervous system.
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Begin by defining the hypothalamus as a critical brain region located below the thalamus, responsible for maintaining homeostasis by regulating various autonomic functions.
Explain that the autonomic nervous system (ANS) controls involuntary bodily functions such as heart rate, blood pressure, digestion, and temperature regulation.
Describe how the hypothalamus acts as the main control center for the ANS by integrating sensory input and coordinating responses to maintain internal balance.
Discuss the hypothalamus's role in sending signals to the sympathetic and parasympathetic divisions of the ANS to either stimulate or inhibit organ activity depending on the body's needs.
Highlight that through this regulation, the hypothalamus helps the body respond to stress, regulate metabolism, control fluid balance, and maintain body temperature, demonstrating its vital role in autonomic control.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Hypothalamus Function
The hypothalamus is a brain region that acts as a control center for many autonomic functions. It regulates vital processes such as temperature, hunger, thirst, and emotional responses by integrating signals from the nervous and endocrine systems.
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The Hypothalamus and Pituitary Gland Example 3
Autonomic Nervous System (ANS)
The ANS controls involuntary bodily functions like heart rate, digestion, and respiratory rate. It has two main divisions: the sympathetic system, which prepares the body for 'fight or flight,' and the parasympathetic system, which promotes 'rest and digest' activities.
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1:50Somatic vs. Autonomic Nervous System
Hypothalamic Regulation of ANS
The hypothalamus influences the ANS by sending signals to autonomic centers in the brainstem and spinal cord. This regulation ensures the body maintains homeostasis by adjusting autonomic responses to internal and external stimuli.
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3:33Levels of Control in the ANS
Related Practice
Textbook Question
As the aroma of freshly brewed coffee drifted by dozing Henry's nose, his mouth started to water and his stomach began to rumble. Explain his reactions in terms of ANS activity.
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Textbook Question
Tiffany, a 21-year-old college student, is having trouble sleeping, cries frequently, and has recurrent thoughts of suicide. An antidepressant is prescribed. Like many such drugs, this antidepressant has anticholinergic side effects. What side effects might Tiffany experience in the first week of treatment?
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Textbook Question
Describe the meaning and importance of sympathetic tone and parasympathetic tone.
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Textbook Question
Mr. Johnson suffers from urinary retention and a hypoactive urinary bladder. Bethanechol, a drug that mimics acetylcholine's autonomic effects, is prescribed to manage his problem. First explain the rationale for prescribing bethanechol, and then predict which of the following adverse effects Mr. Johnson might experience while taking this drug (select all that apply): dizziness, low blood pressure, deficient tear formation, wheezing, increased mucus production in bronchi, deficient salivation, diarrhea, cramping, excessive sweating, undesirable erection of penis.
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Textbook Question
Indicate the results of sympathetic activation of the following structures: sweat glands, eye pupils, adrenal medullae, heart, bronchioles of the lungs, liver, blood vessels of vigorously working skeletal muscles, blood vessels of digestive viscera, salivary glands.
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