peripheral nervous system consists of how many nervous ? what is their nature type?
Answers
The PNS is built almost entirely from nerves.
There are two main types; spinal nerves and cranial nerves. Functionally, the PNS can be divided into the autonomic and somatic nervous systems
Answer:
Peripheral Nervous System consists of 43 pairs of nerves of which 12 pairs are cranial nerves and 31 pairs are spinal nerves.
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Know more :-
→ The nerves which originates from the central nervous system and connect either receptor or effector organs, form peripheral nervous system.
→ Those nerves which arises from brain are called cranial nerves.
These nerves are so named because they pass through various foramina (openings) in the cranial bones (bones of the brain box).
→ The nerves originating from the spinal cord are termed as spinal nerves.
They include 8 pairs of cervical nerves, 12 pairs of thoracic nerves, 5 pairs of lumbar nerves , 5 pairs of sacral nerves, and one pair of coccygeal nerves.