Multiple Choice
Where is the white matter located in the spinal cord?
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12. The Central Nervous System
Introduction to the Central Nervous System
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Which of the following best describes a primary function of cerebrospinal fluid (CSF) in the central nervous system?
A
It produces hormones for the endocrine system.
B
It cushions the brain and spinal cord from injury.
C
It transmits electrical impulses between neurons.
D
It stores long-term memories.
Verified step by step guidance1
Understand the role of cerebrospinal fluid (CSF) in the central nervous system. CSF is a clear, watery fluid that circulates in the brain's ventricles, the central canal of the spinal cord, and the subarachnoid space surrounding the brain and spinal cord.
Recognize that CSF serves several critical functions, including providing mechanical protection by cushioning the brain and spinal cord against physical trauma.
Eliminate incorrect options by analyzing their relevance to CSF: CSF does not produce hormones (this is the role of endocrine glands), does not transmit electrical impulses (this is the role of neurons), and does not store long-term memories (this is the function of the brain's hippocampus).
Focus on the correct function: CSF acts as a shock absorber, reducing the impact of sudden movements or injuries to the central nervous system.
Conclude that the best description of a primary function of CSF is its role in cushioning the brain and spinal cord from injury.
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