Cranial Contents--BV

Question 1

What major 4 vessels arise in the neck and eventually supply blood to the brain?

Answer 1

right/left vertebral, right/left common carotid arteries

Question 2

be able to label a diagram of the arterial circle at the base of the brain

Answer 2

:)

Question 3

what are the terminal branches of the internal carotid artery?

Answer 3

anterior and middle cerebral arteries

Question 4

what are the terminal branches of the basilar artery?

Answer 4

left/right posterior cerebral arteries

Question 5

what are the various anatomical relationships superior to the diaphragma sellae? why are they clinically important?

Answer 5

the optic chiasm and the opthalmic artery; it is the only artery to supply the retina; compression of either by an enlarging hypophysis from below will result in blindness

Question 6

thru what opening does the internal carotid artery enter the bone of the skull? in which direction does the artery pass once in this bony canal?

Answer 6

opening of the carotid canal; horizontally (medially) within the bone;

Question 7

thru what opening does the internal carotid artery exit the the carotid canal? into what structure does the vessel immediately enter? what is the anatomical shape of the vessel within this structure?

Answer 7

foramen lacerum; cavernous sinus; siphon shape (S)

Question 8

How does the internal carotid gain access to the cranial cavity?

Answer 8

thru the dural roof of the cavernous sinus

Question 9

what is the first branch of the internal carotid artery?

Answer 9

opthalamic artery