Which part of the nervous system do cranial nerves arising from the brain and spinal nerves arising from the spinal cord belong to?
Peripheral nervous system
The correct answer is Option 3 i.e. Peripheral nervous system.
The cranial nerves (arising from the brain) and spinal nerves (arising from the spinal cord) belong to the Peripheral Nervous System (PNS). The PNS connects the Central Nervous System (CNS), which includes the brain and spinal cord, to the rest of the body, transmitting sensory and motor signals.
Other options:
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Autonomic Nervous System (ANS) – A subdivision of the PNS that controls involuntary functions (e.g., heart rate, digestion).
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Central Nervous System (CNS) – Consists of the brain and spinal cord; processes information but does not include peripheral nerves.
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Endocrine System – Uses hormones (not nerves) for communication (e.g., thyroid, adrenal glands).
Thus, the correct answer is the Peripheral Nervous System, as cranial and spinal nerves extend outside the CNS.
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