Peripheral nervous system in man consists of:
Correct answer: A. 31 spinal and 12 cranial nerve pairs
- A. 31 spinal and 12 cranial nerve pairs
- B. 33 spinal and 12 cranial nerve pairs
- C. 12 spinal and 31 cranial nerve pairs
- D. 31 spinal and 31 cranial nerve pairs
Explanation
The Peripheral Nervous System (PNS) in humans consists of:1. Cranial nerves: 12 pairs of nerves that emerge directly from the brain and control functions of the head, neck, and some body organs.2. Spinal nerves: 31 pairs of nerves that originate from the spinal cord and innervate the rest of the body, including limbs, trunk, and organs.
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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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