Blood Supply

Question 1

Internal Carotid profusion & divisions

Answer 1

• supplies most of cerebrum
• opthalamic a., anterior choroidal a, posterior communicating a.
• BIFURCATES into anterior and middle cerebral artery

Question 2

Vertebral arteries profusion and divisions

Answer 2

• lateral medulla & spine
• posterior and anterior spinal artery, PICA (post. inf. cerebral a.)
• fuse to form basilar artery

Question 3

Basilar artery divisions

Answer 3

• superior cerebral a. & AICA (ant. inf. cerebral a.)

- splits into posterior cerebral arteries

Question 4

What profuses deep cerebral structures?

Answer 4

• small perforating arteries supply deep cerebral structures

- MCA?

Question 5

Blood-Brain-Barrier (BBB) function

Answer 5

-restricts ionic fluid movements, supplies essential nutrition, and mediates efflux of waste or toxic products

Question 6

BBB Composition

Answer 6

capillary endothelial cells, pericytes, astrocytes end feet, neuronal process

Question 7

2 major divisions of venous drainage

Answer 7

• superficial veins
• -superior empty into sup. & inf. sagittal sinuses
• -inferior empty into transverse and cavernous sinus