Last-anatomy & function of spinal cord & nerves

Question 1

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

Answer 1

White matter of spinal cord

Question 2

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

Answer 2

Grey matter of spinal cord

Question 3

these structures contain the axons of the autonomic sensory

Answer 3

Dorsal root of spinal nerve

Question 4

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

Answer 4

Dorsal root ganglion

Question 5

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

Answer 5

Ventral root of spinal nerve

Question 6

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

Answer 6

Spinal nerve

Question 7

where is the central canal located

Answer 7

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

Question 8

there are how many pairs of spinal nerves

Answer 8

31

Question 9

how many types of each pair of nerves are there

Answer 9

8 cervical
12 thoracic
5 lumbar 
5 sacral 
1 coccygeal

Question 10

the dorsal and ventral root join together to make the

Answer 10

spinal nerve

Question 11

spinal nerves are ___

Answer 11

mixed nerves

Question 12

mixed nerves have both ___ and ___

Answer 12

sensory and motor functions

Question 13

these 3 branches divide to exit the vertebral foramen

Answer 13

dorsal ramus
ventral ramus
meningeal ramus

Question 14

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

Answer 14

Arachnoid layer of meninges

Question 15

A space between the arachnoid and pia mater containing cerebrospinal fluid

Answer 15

Subarachnoid space

Question 16

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

Answer 16

Pia mater

Question 17

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

Answer 17

Dura mater