BLOOD SUPPLY TO THE BRAIN & THE MENINGES

Question 1

What are the 2 main arteries that supply the brain:

Answer 1

2 Internal Carotid Arteries

2 Vertebral Arteries are renamed as Basilar arteries at the level of the pons

Question 2

What are the terminal arteries that branch off the main arteries to the brain?

Answer 2

Internal Carotid = Anterior cerebral Artery(ACA) and Middle Cerebral Artery (MCA)
Basilar Artery (vertebral) = Posterior Cerebral Artery (PCA)

Question 3

Identify which arteries provide blood supply to which parts of the cerebral cortex

Answer 3

ACA- Supplies the medial, anterior and superior portions of the cerebral hemisphere
MCA- supplies primarily the lateral surface of the cerebral hemisphere
PCA- Supplies the posterior portion and inferior aspect of the medial surface of the cerebral hemisphere

Question 4

What is the function of the Circle of Willis and the main arteries that supply it?

Answer 4

Provides multiple paths for oxygenated blood to supply the brain if any of the other suppliers are constricted
Internal carotid artery (left and right)
Basilar artery

Question 5

what is the return of blood to the heart?

Answer 5

Series of sinuses in the cerebrum collects the deoxygenated blood
To the jugular veins
To the heart to get reoxygenated