The outer portion of the spinal cord is composed of:
Correct answer: A. White matter
- A. White matter
- B. Gray matter
- C. Cell bodies
- D. Non-myelinated nerve fibres
Explanation
A is correct since the outer portion of the spinal cord consists of white matter because of the fatty substance (myelin) that surrounds the nerve fibers.
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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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