Blood Supply of the Brain and Spinal Cord

Question 1

The brain is supplied by the two __________ arteries and two __________ arteries.

Answer 1

Internal Carotid Arteries

Vertebral Arteries

Question 2

All four main arteries lie in the __________.

Answer 2

Subarachnoid space

Question 3

The internal canal artery lies ___________ (medial/lateral/superior/inferior) to the anterior clinoid process.

Answer 3

Medial to the anterior clinoid process

Question 4

The ophthalamic artery (a branch of internal carotid artery) enters the optic canal and lies ________ (superolateral/superomedial/inferolateral/inferomedial) to the optic nerve.

Answer 4

Inferolateral to the optic nerve

Question 5

What does the ophthalamic artery supply?

Answer 5

Eye and orbital structures
Frontal and Ethmoid Sinuses
Dorsum of the nose to the tip
Frontal part of the Scalp

Question 6

The posterior communicating branch runs posteriorly above the cranial nerve ________ (3/4/5/6) and joins the posterior cerebral artery.

Answer 6

Cranial nerve 3 (oculomotor nerve)

Question 7

What does the choroidal artery supply?

Answer 7

Crus Cerebri
Lateral Geniculate body
Optic Tract
Internal Capsule

Question 8

The choroidal artery passes posteriorly close to the optic tract, enters the ________ (inferior/ posterior/ anterior) horn of the lateral ventricle and ends in the choroid plexus.

Answer 8

Inferior horn of the lateral ventricle