Textbook Question
Receptors that bind acetylcholine at the postsynaptic membrane are:
(a) Chemically gated channels
(b) Voltage-gated channels
(c) Passive channels
(d) Mechanically gated channels
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Ch. 12 Nervous Tissue
Martini, Nath, Bartholomew12th EditionFundamentals of Anatomy and PhysiologyISBN: 9780137854011
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Table of contents
- Ch. 1 An Introduction to Anatomy and Physiology25
- Ch. 2 The Chemical Level of Organization34
- Ch. 3 The Cellular Level of Organization29
- Ch. 4 The Tissue Level of Organization24
- Ch. 5 The Integumentary System17
- Ch. 6 Bones and Bone Structure33
- Ch. 7 The Axial Skeleton11
- Ch. 8 The Appendicular Skeleton17
- Ch. 9 Joints13
- Ch. 10 Muscle Tissue12
- Ch. 11 The Muscular System28
- Ch. 12 Nervous Tissue18
- Ch. 13 The Spinal Cord, Spinal Nerves, and Spinal Reflexes22
- Ch. 14 The Brain and Cranial Nerves20
- Ch. 15 Sensory Pathways and the Somatic Nervous System17
- Ch. 16 The Autonomic Nervous System and Higher-Order Functions30
- Ch. 17 The Special Senses15
- Ch. 18 The Endocrine System21
- Ch. 19 Blood31
- Ch. 20 The Heart31
- Ch. 21 Blood Vessels and Circulation26
- Ch. 22 The Lymphatic System and Immunity25
- Ch. 23 The Respiratory System4
- Ch. 24 The Digestive System18
- Ch. 26 The Urinary System31
- Ch. 27 Fluids & Electrolytes30
- Ch. 28 The Reproductive System12
- Ch. 29 Development and Inheritance17
Martini, Nath, Bartholomew12th EditionFundamentals of Anatomy and PhysiologyISBN: 9780137854011Not the one you use?Change textbook
Chapter 12, Problem 9c
What are the major components of
(c) the enteric nervous system?
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Understand that the enteric nervous system (ENS) is a complex network of neurons that governs the function of the gastrointestinal (GI) tract independently of the central nervous system.
Identify the two major plexuses (networks of neurons) that make up the ENS: the myenteric plexus and the submucosal plexus.
The myenteric plexus (also called Auerbach's plexus) is located between the longitudinal and circular layers of the muscularis externa and primarily controls GI motility.
The submucosal plexus (also called Meissner's plexus) is found in the submucosa and mainly regulates enzyme secretion, blood flow, and absorption in the GI tract.
Recognize that these plexuses contain sensory neurons, interneurons, and motor neurons, which together coordinate reflexes and local control of digestion.
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Key Concepts
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Structure of the Enteric Nervous System
The enteric nervous system (ENS) is a complex network of neurons located in the walls of the gastrointestinal tract. It consists mainly of two major plexuses: the myenteric (Auerbach's) plexus, which controls gut motility, and the submucosal (Meissner's) plexus, which regulates secretion and blood flow.
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Structure of the Parasympathetic Nervous System
Functions of the Enteric Nervous System
The ENS autonomously manages digestive processes such as peristalsis, enzyme secretion, and blood flow regulation. It operates independently but also communicates with the central nervous system to coordinate overall gut function and respond to physiological changes.
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2:52Function of the Sympathetic Nervous System
Neuronal Types in the Enteric Nervous System
The ENS contains various types of neurons including sensory neurons that detect chemical and mechanical changes, interneurons that process information, and motor neurons that control muscle contraction and gland secretion. These diverse neurons enable the ENS to regulate complex digestive activities.
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3:33Peripheral Nervous System
Related Practice
Textbook Question
Why can't most neurons in the CNS be replaced when they are lost to injury or disease?
Textbook Question
What are the major components of the peripheral nervous system?
Textbook Question
What three functional groups of neurons are found in the nervous system? What is the function of each type of neuron?
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Textbook Question
Which two types of neuroglia insulate neuron cell bodies and axons in the PNS from their surroundings?
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Textbook Question
The neural cells responsible for the analysis of sensory inputs and coordination of motor outputs are:
(a) Neuroglia
(b) Interneurons
(c) Sensory neurons
(d) Motor neurons