Question

15. List various components of central nervous system and peripheral nervous system. Give protective coverings
of brain and spinal cord and their functions.
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Answer 1

Answer:

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Answer 2

Answer:

-the central nervous system consisted of Brain and spinal cord.

-the peripheral nervous system consists of nerves that branch off from Spinal cord and extend to all the parts of body.

**The brain and spinal cord are covered by three layers of meninges, or protective coverings: the dura mater, the arachnoid mater, and the pia mater.

1. the dura mater: The dura mater surrounds and supports the large venous channels (dural sinuses) carrying blood from the brain toward the heart.

2. arachnoid mater : helps to support the brain from sudden impact.

3. pia mater : it's function is to protect the central nervous system by containing the cerebrospinal fluid which cushions the brain and spine.

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