Meninges

Question 1

Name the 2 layers of dura mater

Answer 1

1. Periosteal Layer: attached to skull

2. Meningeal Layer

Question 2

What is the dura mater comprised of?

Answer 2

Fibroblast-like cells that secrete collagen

Question 3

Name the 2 flaps of dura mater

Answer 3

Falx Cerebri: btw hemispheres

Tentorium Cerebelli: btw hemispheres and cerebellum

Question 4

Name the major veins in dura mater and why they’re important

Answer 4

Dural sinuses: bring cerebral blood back to circulation. For reabsorption of CSF

Question 5

Name the space btw the dura and arachnoid mater

Answer 5

Subdural space

Question 6

A brain bleed can result in what?

Answer 6

Subdural hematoma: dural sinus damage can cause bleeding into the subdural space and compress the brain

Question 7

Name the 3 parts of the arachnoid mater and what they do

Answer 7

Arachnoid granulations: collections of arachnoid villi containing unidirectional valves through which CSF passes into venous circulation

Arachnoid trabecula:

Arachnoid membrane:

Question 8

Name the space btw arachnoid and pia mater

Answer 8

Subarachnoid space: holds CSF

Question 9

Location of the pia mater

Answer 9

Adheres to cerebral cortex and is the only layer to follow the deep convolutions

Question 10

Name the vein along the top of the brain

Answer 10

Superior sagittal sinus

Question 11

Name the space btw cerebral vasculature and cortex

Answer 11

Perivascular space

Question 12

Name the 5 major subarachnoid cisterns and their locations

Answer 12

1. Interpeduncular: in the interpeduncular fossa
2. Quadrageminal
3. Pontine
4. Cistern magna: below cerebellum
5. Lumbar

Question 13

What’s the function of the choroid plexus

Answer 13

Creates CSF from blood plasma