Question

describe the structure and function of spinal corddescribe the structure and function of spinal cord​

Answer 1

Answer:

spinal cord lies loosely in the vertebral canal.

It extend form from foramen Magnum where it is continuous with medula oblongata, up and up to the lower border of first lumbar vertebra below.

Explanation:

spinal cord lies loosely in the vertebral canal.

It extend form from foramen Magnum where it is continuous with medula oblongata, up and up to the lower border of first lumbar vertebra below.

coverings-

spinal cord is covered by seat called meninges, which are membrane in nature. meninges are Dura mater, Pia mater and Arachnoid mater.

shape and length:-

spinal cord in cylindrical shape

length of spinal cord is about 45 in males and about 43 in females.

spinal segment and spinal nerves:-

1 cervical segment /cervical spinal nerves-8

2 thoracic segment /thoracic spinal nerves- 12

3 lumbar segment /lumbar spinal nerves- 5

4 sacral segment/ sacral spinal nerves -5

5 coccyx-1

total nerves spinal cord=31pair.

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