Gray Matter Flashcards
1
Q
1 + 2 + 3
A
White matter divided into 3 columns, each containing fiber tracks, composed of axons with similar functions
- posterior funiculus
- lateral funiculus
- anterior funiculus
2
Q
4
A
anterior white commissure
3
Q
5
A
dorsal horn (or posterior horn)
- interneurons
4
Q
6
A
lateral horn
- contain sympathetic nerve fibers
5
Q
7
A
ventral horn (or anterior horn)
- interneurons + somatic motor neurons
- if damaged, flaccid paralysis results.
6
Q
8
A
gray commissure
- connects masses of gray matter
- encloses the central canal
7
Q
11
A
dorsal intermediate sulcus
8
Q
12
A
dorsal lateral sulcus
9
Q
13
A
ventral lateral sulcus
10
Q
23
A
dorsal root (sensory roots)
11
Q
24
A
dorsal root ganglion
12
Q
25
A
ventral root ganglion (motor roots)
13
Q
26
A
spinal nerves
- the dorsal and ventral roots fuse laterally to form the spinal nerves
- there are 31 pairs attached to the cord by paired roots
14
Q
27
A
dorsal ramus of spinal nerve
Function: sensory/motor innervation to skin and back muscles
15
Q
28
A
ventral ramus of spinal nerve
Function: sensory/motor innervation to ventral/lateral body surface/skin, body wall/trunk, limb muscles
