Blood Supply to Brain

Question 1

The brain is supplied by what two arteries?

Answer 1

Internal carotid artery and Vertebral-basilar artery

Question 2

What is the anterior blood supply of the brain?

Answer 2

Internal Carotid Artery

Question 3

What is the posterior blood supply of the brain?

Answer 3

Vertebral-basilar artery

Question 4

What are the major branches of the ICA?

Answer 4

1. Anterior cerebral artery (ACA)
2. Ophthalmic artery
3. Middle cerebral artery (MCA)
4. Posterior communicating artery

Question 5

What are the major branches of the basilar artery?

Answer 5

1. Posterior Cerebral Artery
2. Pontine Arteries
3. Superior Cerebellar Artery (SCA)
4. Anterior Inferior Cerebellar Artery

Question 6

Patient has posterior cerebral artery aneurysm which cranial nerve will be impinged?

Answer 6

CN III: Oculomotor N.

Question 7

The ophthalmic artery travels through which foramen?

Answer 7

Optic Canal w/ the Optic N (CN: II)

Question 8

The central artery of the retina is occuluded due to diabetes or a clot can cause________

Answer 8

blindness or vision problems

Question 9

What connects the right and left cerebral arteries?

Answer 9

Anterior communicating arteries

Question 10

The L&R anterior cerebral aa. supplies?

Answer 10

• anterior and middle portions of the corpus callosum
• olfactory bulb and tract
• medial parts of the frontal and parietal lobes

Question 11

What is the largest branch of the ICA and most often occluded?

Answer 11

Middle Cerebral Artery (MCA)

Question 12

What brain lobes does the MCA supply?

Answer 12

ONLY LATERAL ASPECTS: 
Frontal
Parietal
Temporal 
Occipital 
Insular

Question 13

The Middle Cerebral Artery (MCA) arteries DOES NOT supply superolateral frontal and parietal lobes and inferior temporal lobes? T or F

Answer 13

True

Question 14

Functions of the Posterior Communicating AA.?

Answer 14

Anastomose with the posterior cerebral aa. thus forming a connection between the anterior and posterior circulation

Question 15

Arise from both vertebral arteries and the largest branch of the vertebral a.

Answer 15

Posterior Inferior Cerebellar AA. (PICA)

Question 16

What does the posterior inferior cerebellar artery supply?

Answer 16

posterior cerebellum
inferior cerebellar
medulla

2 posterior spinal arteries arise from the PICA
-supply the posterior 1/3 of the spinal cord

Question 17

What artery supplies the posterior inferior cerebellum?

Answer 17

posterior inferior cerebellar artery (PICA)

Question 18

• Aries from both vertebral arteries
• Runs along the anterior median fissure of the spinal cord
• Continues inferiorly to supply anterior 2/3 of spinal cord
• medial medulla

Answer 18

Anterior Spinal Artery

Question 19

• At the midbrain, it bifurcates into posterior cerebral arteries (terminal branches)
• supplies penetrating branches to the pons (pontine arteries)
• gives off anterior inferior cerebellar aa. and superior cerebellar arteries

Answer 19

Basilar artery

Question 20

What makes up the 9 members of the Circle of Willis?

Answer 20

(1) Anterior Communicating Artery
(2) Internal Carotid Artery (ICA)
(2) Anterior Cerebral Artery
(2) Posterior Cerebral Artery (PCA)
(2) Posterior Communicating Artery

Question 21

What artery supplies the anterior inferior cerebellum?

Answer 21

Anterior inferior cerebellar a. (AICA)

Question 22

What artery supplies the superior cerebellum

Answer 22

Superior cerebellar artery

Question 23

What does the basilar do at the midbrain?

Answer 23

it divides into posterior cerebral arteries

Question 24

What CN is between the posterior cerebral artery and the superior cerebellar artery. If impinged it can cause Berry’s Anersyum (eye deficits)

Answer 24

impingement of CN III: (oculomotor)

Question 25

The posterior cerebral arteries supply:

Answer 25

Midbrain
Occipital lobe (visual cortex)
Temporal lobe
Posterior Corpus Callosum

Question 26

What are the 2 main branches of the vertebral artery?

Answer 26

Posterior Inferior Cerebellar Artery

Anterior Spinal Artery

Question 27

What artery supplies the anterior and middle portion of the corpus callosum, olfactory bulb and tract, and medial parts of frontal and parietal lobe?

Answer 27

L/R Anterior Cerebral A.