The Central Nervous System Consists of The

question 166

Multiple Choice

The central nervous system consists of the:

• A) parasympathetic and sympathetic divisions.
• B) brain and the spinal cord.
• C) muscles and glands.
• D) sense organs and sensory neurons.

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Definitions:

Nerve Fibers

Long, slender projections of neurons that transmit electrical impulses across the nervous system.

Epineurium

An outer fibrous sheath that surrounds a peripheral nerve, providing protection and support to the nerve fibers within.

Endoneurium

The innermost layer of connective tissue that surrounds individual nerve fibers within a nerve.

Perineurium

A protective sheath of connective tissue that surrounds a bundle (fascicle) of nerve fibers within a nerve.