Meninges

Question 1

What are dural venous sinuses?

Answer 1

Areas where the 2 layers of dura (periosteal and meningeal) SEPARATE to form channels

Question 2

Meningeal coverings from most interior to most exterior

Answer 2

Pia mater, arachnoid, meningeal dura, periosteal dura

Question 3

Real and potential spaces (interior to exterior)

Answer 3

Subarachnoid (real) – between pia and arachnoid; subdural (potential) between arachnoid and meningeal dura; epidural (potential) between skull and periosteal dura

Question 4

Falx cerebri

Answer 4

Fold of dura between cerebral hemispheres: has superior sagittal and inferior sagittal sinuses

Question 5

Tentorium cerebelli

Answer 5

Fold of dura between cerebrum and cerebellum

Question 6

Falx cerebelli

Answer 6

fold of dura between cerebellar hemispheres

Question 7

Diaphragma sellae

Answer 7

Fold of dura covering pituitary fossa

Question 8

Which two layers separate to form venous sinuses?

Answer 8

Periosteal and meningeal dura

Question 9

How many sinuses are there?

Answer 9

9:

Superior sagittal sinus

Inferior sagittal sinus

Straight sinus

Transverse sinus

Sigmoid sinus

Cavernous sinus

Sphenoparietal sinus

Petrosal sinuses

Occipital sinus

Question 10

Where is the confluene of sinuses?

Answer 10

posterior pole

Question 11

Which vein does venous blood ultimately drain into?

Answer 11

Internal jugular

Question 12

Describe the flow of venous blood in the brain

Answer 12