Multiple Choice
What is the white matter of the spinal cord primarily composed of?
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12. The Central Nervous System
Introduction to the Central Nervous System
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In the spinal cord, which type of matter contains the cell bodies of neurons?
A
Dura mater
B
Gray matter
C
White matter
D
Pia mater
Verified step by step guidance1
Understand the structure of the spinal cord: The spinal cord is composed of gray matter and white matter, surrounded by protective layers called meninges (dura mater, arachnoid mater, and pia mater).
Learn the function of gray matter: Gray matter contains the cell bodies of neurons, dendrites, and unmyelinated axons. It is responsible for processing and integrating information.
Learn the function of white matter: White matter consists of myelinated axons that transmit signals between different parts of the nervous system.
Understand the role of meninges: The dura mater, arachnoid mater, and pia mater are protective layers that surround the spinal cord and brain, but they do not contain neuron cell bodies.
Conclude that gray matter is the correct answer because it specifically contains the cell bodies of neurons, while white matter and meninges do not.
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