Meninges and CSF

Question 1

Three membranes that surround the brain

Answer 1

dura mater or pachymeninx
pia mater
arachnoid

arachnoid and pia mater form the leptomeninges

Question 2

2 layers of the dura

Answer 2

outer periosteal layer - rich in blood vessels and nerves

inner meningeal layer - lined with flat cells

Question 3

borders of falx cerebri

Answer 3

extends midline from crista galli to the internal occipital protruberance

Question 4

origin of the tranvsverse dural septa

Answer 4

superior crest of the petrous portion of the temporal bone

forms the tentorium cerebelli

Question 5

midsagittal septum which partially separates the cerebellar hemispheres

Answer 5

falx cerebelli

Question 6

major blood supply of the dura

Answer 6

middle meningeal artery

branch of maxillary artery
enters the skull via foramen spinosum

Question 7

innervations of the supratentorial and infratentorial dura

Answer 7

Supratentorial dura - trigeminal nerve

Infratentorial dura - branches of the upper cervical nerves, and the vagus nerves

Question 8

location of the largest spinal epidural space

Answer 8

second lumbar vertebrae

Question 9

extension of spinal dura

Answer 9

margins of foramen magnum to the level of the second sacral vertebrae

Question 10

2 layers of pia mater

Answer 10

inner membranous layer, intima pia

more superficial, epipial layer

Question 11

T or F

intima pia is vascular

Answer 11

false

avascular

Question 12

largest cistern

Answer 12

cisterna magna

cerebellomedullary cistern

Question 13

what cistern contains the vein of Galen

Answer 13

cisterna ambiens

also contain the posterior cerebral and superior cerebellar arteries