Nerve supply of the back Flashcards
1
Q
**
functions of spinal cord
A
- relay center for incoming sensory info through dorsal roots and horn
- conduit for ascending (afferent) and descending (efferent) pathways
- origin of LMNs: commands to muscles of body from ventral horn
2
Q
spinal cord is protected by ____
A
vertebral column
3
Q
spinal cord is covered by ____
A
meninges
4
Q
spinal nerves exit through the ____
A
intervertebral foramen
5
Q
what are meninges?
A
connective tissue membranes
6
Q
layers of meninges
A
dura
arachnoid
pia
7
Q
spaces of meninges
A
- subarachnoid
- subdural
- epidural
8
Q
subarachnoid space is filled with ____
A
cerebrospinal fluid and arteries
9
Q
subdural space is the location of ____
A
veins
10
Q
epidural space is filled with ____
A
fat
11
Q
adult spinal cord is continuous with ____
A
medulla
12
Q
adult spinal cord length
A
42-45cm
13
Q
what is the conus medullaris?
A
conical distal end of spinal cord at L1-L2 vertebral level
14
Q
the spinal cord has ____ and ____ enlargements
A
cervical and lumbar enlargements
15
Q
cauda equina
A
nerve roots extending beyond conus medullaris
