blood supply

Question 1

brain receives blood supply from

Answer 1

branches of internal carotid arteries

vertebral/basilar arterial system

Question 2

Internal carotid has 5 branches

Answer 2

1- ophthalmic artery
2- anterior choroidal artery 
3- posterior communicating artery 
4- bifuricates anterior cerebral artery 
5-bifuricates middle cerebral arteries

Question 3

Anterior cerebral artery

Answer 3

enter longitudinal fissure by passing medial to gyrus rectus

Question 4

anterior communicating arteries

Answer 4

interconnects 2 anterior cerebral arteries
blood to midsagittal cortical regions as far back as parietoocipital sulcus
some lateral surface of superior frontal gyrus , superior parietal lobule

Question 5

lenticulostriate branches

Answer 5

from anterior cerebral artery

supply internal structures

Question 6

middle cerebral artery

Answer 6

gives off many lenticulostriate arteries that enter base of brain
supply deep internal structures
basal ganglia, internal capsule, insula
remaining lateral surface of frontal and parietal, superior and middle temporal gyro

Question 7

anterior perforated substance

Answer 7

arteries that case small dimples at the points which the small lenticulostriate arteries enter brain

Question 8

vertebral arteries

Answer 8

branch from arteries in neck- subclavian arteries

enter via foramen magnum

Question 9

basilar artery

Answer 9

2 vertebral arteries join

Question 10

PICA

Answer 10

posterior inferior cerebellar artery
1st branch of vertebral artery
supply cerebellum

Question 11

posterior spinal artery

Answer 11

branch of PICA

Question 12

Anterior spinal artery

Answer 12

2nd branch of vertebral that unit medially

Question 13

basilar artery has 3 major paired branches

Answer 13

Anterior Inferior Cerbellar arteries-AICA (cerebellum)
Superior cerebellar arteries (cerebellum)
Posterior cerebral arteries- (cerebrum)

Question 14

posterior cerebal arteries

Answer 14

midsagittal surfaces of temporal and occipital lobes and lateral peripheral margins of these lobes

Question 15

Circle of Willis

Answer 15

forms a ring around region of infundibular stalk, optic nerves, optic chasm

Question 16

COW arteries

Answer 16

internal carotid arteries
anterior cerebral arteries
anterior communicating artery
posterior communicating artery
posterior cerebral arteries 

*middle cerebral arteries not part of COW

Question 17

Aneurysms

Answer 17

may develop at junction points of theses arteries