13. Spinal cord and meninges Flashcards
Spinal cord extends from the _ to the lumbar vertebra
medulla oblongata
There are _ pairs of spinal nerves
31
There are _ cervical pairs
8
Spinal cord terminates around _
L1/2
T/F C1 spinal nerve exits below C1 vertebra
False (it exits above C1)
C8 spinal nerves exits below _
C7
There are 2 enlargements, _ and _
cervical and lumbar
The end of the spinal cord is the _
conus medullaris
The _ has pia mater continuous to coccygeal ligament
filum terminal
The area past the end of the spinal cord that contains both dorsal and ventral nerve roots is _
cauda equina
Grey matter contains _
neuronal cell bodies
White matter contains _
axons and neuronal tracts
The _ is the channel for autonomic and flight or fight response
sympathetic chain
List the path to forming spinal nerves
Rootlets (D/V)
Roots (D/V) combine to form spinal nerve
Spinal nerve branches into Rami (D/V)
T/F As you move down the spinal cord, you get more grey matter
True
Dermatomes tend to _
overlap
The 3 spinal meninges are _
Dura mater
Arachnoid mater
Pia mater
There is _ in the epidural and _ in the subarachnoid space
fat
CSF
The dura mater extends from the _ to around _
foramen magnum
S2
Dura mater forms sleeves around nerves called _
epineurium
Pia mater is attached to the dura through _
denticulate ligaments (21 pairs)
Spinal taps are given around _ and _ while being inserted at _
L3/L4
20 degrees
The spinal venous plexus is located within the _
epidural space
Bacterial meningitis results from _ that may enter the _ and _
bacterial infections
Brain and CSF
Meningitis is _
inflammation of the meninges or fluid in the spinal cord or brain
Incomplete closure of the spine or membranes is _
spina bifida
List the 3 spinal bifida types
Occulta
meningocele
myelomeningocele
