Multiple Choice
In a classroom demonstration of tracheostomy, folded pipe cleaners are most likely used to represent which anatomical structure?
14. The Autonomic Nervous System
Introduction to the Autonomic Nervous System
Multiple Choice
Which of the following structures are primary anatomical components of the parasympathetic division of the autonomic nervous system?
A
Sympathetic chain ganglia
B
Thoracic and lumbar spinal nerves T1-L2
C
Dorsal root ganglia
D
Cranial nerves III, VII, IX, and X, and sacral spinal nerves S2-S4
Verified step by step guidance1
Understand the parasympathetic division of the autonomic nervous system: It is responsible for 'rest and digest' functions, promoting relaxation, energy conservation, and maintenance of homeostasis.
Identify the anatomical components of the parasympathetic division: These include cranial nerves III (oculomotor), VII (facial), IX (glossopharyngeal), and X (vagus), as well as sacral spinal nerves S2-S4.
Eliminate incorrect options: Sympathetic chain ganglia and thoracic/lumbar spinal nerves T1-L2 are part of the sympathetic division, not the parasympathetic division. Dorsal root ganglia are sensory structures and not specific to the parasympathetic division.
Focus on the correct answer: Cranial nerves III, VII, IX, and X, along with sacral spinal nerves S2-S4, are the primary anatomical components of the parasympathetic division.
Relate the components to their functions: For example, cranial nerve X (vagus) plays a major role in parasympathetic control of the heart, lungs, and digestive tract, while sacral spinal nerves contribute to parasympathetic control of the pelvic organs.
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