Last-anatomy & function of spinal cord & nerves Flashcards Preview

Anatomy & Physiology Lab > Last-anatomy & function of spinal cord & nerves > Flashcards

Flashcards in Last-anatomy & function of spinal cord & nerves Deck (17)
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1
Q

composed of both myelinated and unmyelinated axons; has 3 regions, lateral, anterior, lateral, and posterior columns; this area surrounds the gray matter

A

White matter of spinal cord

2
Q

shaped like a butterfly or capital H; composed of neuron cell bodies, neuroglia, cells, dendrites, and unmyelinated axons; 3 regions, anterior, lateral, and posterior horns; central canal is in center of gray matter

A

Grey matter of spinal cord

3
Q

these structures contain the axons of the autonomic sensory

A

Dorsal root of spinal nerve

4
Q

this area contains the cell bodies of somatic and autonomic sensory neurons (thickened part)

A

Dorsal root ganglion

5
Q

this structure contains the cell bodies of the somatic motor neurons that innervate the skeletal muscles

A

Ventral root of spinal nerve

6
Q

these are the nerve tracks that connect the spinal cord w various regions of the body

A

Spinal nerve

7
Q

where is the central canal located

A

very center of the “Gray Matter”; center of the “H”

8
Q

there are how many pairs of spinal nerves

A

31

9
Q

how many types of each pair of nerves are there

A
8 cervical
12 thoracic
5 lumbar 
5 sacral 
1 coccygeal
10
Q

the dorsal and ventral root join together to make the

A

spinal nerve

11
Q

spinal nerves are ___

A

mixed nerves

12
Q

mixed nerves have both ___ and ___

A

sensory and motor functions

13
Q

these 3 branches divide to exit the vertebral foramen

A

dorsal ramus
ventral ramus
meningeal ramus

14
Q

A vascular layer of connective tissue which functions to protect the brain and spinal cord

A

Arachnoid layer of meninges

15
Q

A space between the arachnoid and pia mater containing cerebrospinal fluid

A

Subarachnoid space

16
Q

A thin, transparent layer of connective tissue on the surface of the brain and spinal cord. It contains the blood vessels that nourish the spinal cord

A

Pia mater

17
Q

The most superficial layer of connective tissue surround the brain and spinal cord. It functions to protect the brain and spinal cord

A

Dura mater