01_Coloring Packet 2 Flashcards
1
Q
two layers of dura mater in the cranium
A
- periosteal layer
- meningeal layer
2
Q
periosteal layer
A
lines inner aspect of skull
3
Q
meningeal layer
A
- in close contact with arachnoid mater
- continuous with spinal dura
4
Q
CSF fills
A
subarachnoid space
5
Q
How does CSF gain access to brain and spinal cord?
A
- circulates through ventricles
- goes through lateral and median apertures into subarachnoid space
- flows around and over brain and spinal cord
6
Q
What secretes CSF?
A
choroid plexus
7
Q
What absorbs CSF?
A
arachnoid granulations
8
Q
What are arachnoid granulations?
A
- tufts of arachnoid mater that extend through a layer of split dura
- forms 1 way valve that delivers CSF into venous blood of the sinus
9
Q
What is a lumbar puncture?
A
- spinal tap
- needle into subarachnoid space of lumbar cistern
10
Q
lumbar cistern
A
midline between L3-L4 or L4-L5
11
Q
epidural space
A
space above dura mater
12
Q
How do epidural anesthetics work?
A
- directly anesthetizes nerve fibers of cauda equina
13
Q
Where is the gray matter of the cerebral cortex?
A
surface of the brain
14
Q
Which spinal cord levels have a larger amount of gray matter?
A
those associated with limb innervation
- C5-T1
- L1-S4
15
Q
spinal cord white matter from cranial to caudal
A
decreases
