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The human central nervous system, which acts as the centre for processing information and control, consists of which two structures?
ABrain and spinal cord
BCranial and spinal nerves
CSympathetic and parasympathetic nerves
DReceptors and effectors
Answer & Solution
Correct answer: A. Brain and spinal cord
1. The CNS is the information-processing and control centre.
2. Cranial and spinal nerves make up the peripheral nervous system, ruling out option B.
3. Sympathetic and parasympathetic nerves form the autonomic system, ruling out option C.
4. Receptors and effectors are body parts that sense and act, not the CNS, ruling out option D.
5. The CNS is made of the brain and the spinal cord, option A.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 15 Nervous System "Axon", p.226_
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