Question

How's the formation of spinal cord

Answer 1

Answer:

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Whilst the cranial end of the neural tube forms the brain and cerebellum, the caudal end develops to form the spinal cord. Cells on the dorsal side form the alar plate, which subsequently becomes the dorsal horn (posterior). Cells at the ventral end form the basal plate, which then becomes the ventral horn (anterior).

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Answer 2

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Formation of a typical spinal nerve :

All spinal nerves are of the mixed type i.e. they

have some nerve fibre as sensory and some

motor. Each spinal nerve is formed inside

the neural canal of verterbral column by two

roots - the posterior or dorsal sensory root and

anterior or ventral root. Anterior root receives

the sensory nerve from the dorsal root ganglion

(cell bodies of sensory neurons are located in the ganglion), while the anterior/ventral root gives

out the motor nerve. The dorsal sensory and the

ventral motor nerves together form the mixed

spinal nerve. It emerges out from both sides

of the spinal cord through the intervertebral

foramen. As soon as it emerges out of vertebral

column, it shows three branches viz.

here I have given information about

spinal lnerves

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