Multiple Choice
Which division of the autonomic nervous system is primarily responsible for the ability to focus the eyes for close vision (accommodation)?
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14. The Autonomic Nervous System
Introduction to the Autonomic Nervous System
Multiple Choice
Where are the cell bodies of the preganglionic neurons in the sympathetic division located?
A
In the brainstem nuclei
B
In the sympathetic chain ganglia
C
In the dorsal root ganglia
D
In the lateral horns of the thoracic and lumbar spinal cord
Verified step by step guidance1
Understand the sympathetic division of the autonomic nervous system, which is responsible for the 'fight or flight' response. It involves preganglionic and postganglionic neurons.
Recall that preganglionic neurons are the first neurons in the autonomic pathway. Their cell bodies are located in the central nervous system (CNS).
Learn that the sympathetic division specifically originates from the thoracolumbar region of the spinal cord, meaning it arises from the thoracic and lumbar segments.
Identify the lateral horns of the spinal cord as the specific location where the cell bodies of the preganglionic neurons in the sympathetic division are found. These lateral horns are present in the thoracic and upper lumbar regions.
Note that the lateral horns are distinct structures within the gray matter of the spinal cord, and they house the cell bodies of neurons involved in autonomic functions, including the sympathetic division.
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