White matter in the central nervous system is composed of:
Correct answer: C. Myelinated nerve fibers
- A. Nerve cells
- B. Non-myelinated nerve fibers
- C. Myelinated nerve fibers
- D. Connective
Explanation
White matter in the CNS is primarily composed of myelinated nerve fibers. These nerve fibers have a myelin sheath, which is formed by specialized cells called oligodendrocytes in the CNS.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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