Blood Supply Of The Brain

Question 1

There are 2 independent arterial supply systems of the brain. One provides about 80% and the other 20%. What are they?

Answer 1

Internal carotid arteries - 80%

Vertebral arteries - 20%

Question 2

The internal carotid artery is a continuation of the _______ carotid artery. It has a _______ and ___________ part. It transverses the temporal bone, entering the skull through the ______ _____.

Answer 2

Common
Cervical and intracranial
Carotid canal

Question 3

The _____________ artery follows the cingulate sulcus. It continues as the ____________ artery, which stays immediately adjacent to the corpus callosum.

Answer 3

Callosomarginal

Pericallosal

Question 4

The Middle Cerebral Artery supplies most of the lateral surface of the _________ ____________.

Most of the _______ and ________ _______ are within this area of supply, so occlusion of MCA causes major motor and somatosensory deficits.

Answer 4

Cerebral hemisphere

Precentral and postcentral gyri

Question 5

The medial occipital branch of the posterior cerebral artery supplies the ______ ______.

Answer 5

Visual cortex

Question 6

True or False? The cerebral veins are comprised of several valves.

Answer 6

False. The cerebral veins have no valves…they’re above the heart so they don’t need them.

Question 7

___ is a potent vasorelaxant.

Answer 7

NO

Question 8

A cerebral angiogram is typically produced by introducing a catheter into the _________ artery.

Answer 8

Femoral