Meninges Wk2

Question 1

Meningitis is the

Answer 1

Inflammation of the meninges that causes swelling and pressure on brain

Question 2

Name the three meningeal coverings of the brain

Answer 2

Dura mater (outer), Arachnoid mater and Pia mater (inner)

Question 3

Describe how the dura mater covers the brain
- cranial meninges

Answer 3

Cranial meninges are continuous w spinal meninges @ foramen magnum
Dura consists of two layers: in places layers split to form venous sinuses

Question 4

Identify the major dural sheets & their blood supply

Answer 4

Major dural sheets:
- Falx cerebri
- Falx cerebelli
-Tentorium cerebelli
-Diaphragm sellae

Question 5

Tentorium cerebelli is the

Answer 5

tent layer (ground layer of dura)

Question 6

Falx cerebri is located

Answer 6

division along the longitudinal fissure

Question 7

Is dura vascular? Is it perfused by any arteries?

Answer 7

Highly vascular
and Dura is perfused by middle meningeal artery which
leaves grooves in skull

Question 8

Dura has sensory

Answer 8

Innervation - pain sensations

Question 9

Epidural/ Extradural space

Answer 9

Epidural/ Extradural space
Potential space b/w calvaria and dura
Site of extradural haemorrahage

Question 10

Subdural space

Answer 10

Potential space between
innermost layer of dura
mater and arachnoid mater
Site of subdural haemorrahage

Question 11

Describe how the arachnoid mater
covers the brain

Answer 11

Largely non-vascular
* arachnoid granulations bulge into venous sinuses: maintain CSF volume
- CSF is present in subarachnoid space

Question 12

Pia is the shiny layer

Answer 12

True

Question 13

Rev from arachnoid cisterns

Answer 13

• Cisterna magna - largest
• Interpeduncular cistern
• Quadrigeminal cistern
• Pontine cistern

Question 14

Describe how the pia mater covers the brain

Answer 14

• highly vascular
• adheres closely to brain surface (highly vascular)
• connected to arachnoid via trabeculae