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The autonomic nervous system controls involuntary visceral functions through two opposing components. These two antagonistic systems are which pair?
ASensory and motor neuron systems
BCentral and peripheral nerve systems
CAfferent and efferent root systems
DSympathetic and parasympathetic systems
Answer & Solution
Correct answer: D. Sympathetic and parasympathetic systems
1. The autonomic system has two antagonistic (opposite) divisions.
2. Sensory and motor are neuron functions, not autonomic divisions, ruling out option A.
3. Central and peripheral name the whole nervous system, while afferent and efferent are nerve roots, ruling out options B and C.
4. The two ANS components are the sympathetic and parasympathetic systems, option D.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 15 Nervous System "Autonomic Nervous System", p.232_
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