Ch. 14 The Autonomic Nervous System

Hoehn - Marieb Human Anatomy & Physiology, 12th edition

Hoehn, Haynes, Abbott12th EditionMarieb Human Anatomy & PhysiologyISBN: 9780138242732Not the one you use?Change textbook

Hoehn, Haynes, Abbott 12th Edition

Ch. 14 The Autonomic Nervous System

Problem 4

Chapter 14, Problem 4

Collateral sympathetic ganglia are involved with innervating
a. abdominal organs
b. thoracic organs
c. head
d. arrector pili
e. all of these

Verified step by step guidance

Step 1: Understand the role of collateral sympathetic ganglia. These ganglia are part of the sympathetic nervous system and are located anterior to the vertebral column, unlike the paravertebral ganglia which lie alongside the vertebral column.

Step 2: Recall that collateral ganglia primarily innervate organs in the abdominal and pelvic regions, providing sympathetic input to these areas.

Step 3: Review the options: (a) abdominal organs, (b) thoracic organs, (c) head, (d) arrector pili muscles, and (e) all of these. Consider which organs or structures each type of ganglia typically innervates.

Step 4: Recognize that thoracic organs and head structures are generally innervated by paravertebral ganglia or other specific ganglia, not collateral ganglia. Arrector pili muscles are innervated by postganglionic fibers from paravertebral ganglia.

Step 5: Conclude that collateral sympathetic ganglia are specifically involved with innervating abdominal organs, making option (a) the correct choice.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Collateral Sympathetic Ganglia

Collateral sympathetic ganglia are clusters of nerve cell bodies located anterior to the vertebral column. They differ from paravertebral ganglia and primarily innervate organs in the abdominal and pelvic regions by sending postganglionic fibers to these targets.

Sympathetic Innervation of Abdominal Organs

Sympathetic nerves from collateral ganglia regulate functions of abdominal organs such as the stomach, intestines, liver, and kidneys. These ganglia modulate activities like blood flow, digestion, and secretion through autonomic control.

Distinction Between Sympathetic Targets

Different sympathetic ganglia innervate specific body regions: paravertebral ganglia mainly serve thoracic organs and structures like arrector pili muscles, while collateral ganglia target abdominal and pelvic organs. Understanding this helps identify which ganglia control which organs.

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Receptors at Target Organs

Related Practice

Textbook Question

Which ANS fibers release acetylcholine? Which release norepinephrine?

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Textbook Question

The white rami communicantes contain what kind of fibers?

a. Preganglionic parasympathetic

b. Postganglionic parasympathetic

c. Preganglionic sympathetic

d. Postganglionic sympathetic

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Textbook Question

All of the following characterize the ANS except

a. A two-neuron efferent chain

b. Presence of neuron cell bodies in the CNS

c. Presence of neuron cell bodies in the ganglia

d. Innervation of skeletal muscles

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Textbook Question

Where are the cell bodies of visceral sensory neurons?

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Textbook Question

Briefly explain why the following terms are sometimes used to refer to the autonomic nervous system: involuntary nervous system and emotional-visceral system.

Relate each of the following terms or phrases to either the sympathetic (S) or parasympathetic (P) division of the autonomic nervous system:

______ (1) Short preganglionic, long postganglionic fibers

______ (2) Intramural ganglia

______ (3) Craniosacral part

______ (4) Adrenergic fibers

______ (5) Cervical ganglia

______ (6) Otic and ciliary ganglia

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