Lecture 3 pt. 2 Flashcards
___ and ___ comprise the central nervous system.
brain and spinal cord
thin and transparent layer and coats spinal cord. innermost meningeal layer
pia mater
space between bone/vertebra and dura mater
epidural space
between dura mater and arachnoid mater; has nothing in it
subdural
when blood collects between dural mater and arachnoid mater
subdural hematoma
clear watery fluid, cerebraspinous fluid found here
subarachnoid space
Identify the starred structure on the diagram
internal vertebral plexus
Why is the internal vertebral venous plexus important clinically?
frequent site for metastasis of blood born cancers
Identify the starred structure in the diagram
denticulate ligament
How many set of spinal nerves come out of the vertebral column ?
31 pairs
The spinal cord ends at ____
L1
Identify the following starred structure on the diagram
conus medularis
made of pia mater
filum terminale internus
all three layers fused together
filum terminale externus
these arteries come off the aorta
segmental spinal artery
segmental arteries that reach the spinal cord and anastomose with the spinal artery are ___ and ____.
anterior and posterior medullary arteries
segmental arteries that reach the spinal nerve roots are ____
radicular arteries
segmental arteries that reach both the spinal nerve roots and the spinal cord are ____
radiculospinal arteries
stabilizes spinal cord within center of subarachnoid space
denticulate ligament
Identify the starred structure
anterior spinal artery
Identify the starred structure
vertebral artery
ID the structure
dura mater
ID the starred structure where all three layers fused together
filum terminale externus
ID the artery
segmental medullary artery
