Cerebral Hemispheres And Vascular Supply

Front 1

What is the Circle of Willis?

Back 1

An anastomotic ring, from which all major cerebral vessels arise. Allows much collateral flow, but only a complete ring in ca. 25% of people.

Front 2

What are the main arteries supplying blood to the Circle of Willis?

Back 2

INTERNAL CAROTID ARTERIES (paired); VERTEBRAL ARTERIES (paired)which fuse into the BASILAR ARTERY

Front 3

Which arteries provide most of the blood supply for the diencephalon and the cerebral hemispheres?

Back 3

The INTERNAL CAROTID ARTERIES

Front 4

Name the 3 main artery suppplies for the cortex and subscortical structures, with the artery from which each arises.

Back 4

1.Anterior cerebral artery (from internal carotid arteries).
2. Middle cerebral artery (from internal carotid artery).
3. Posterior cerebral artery (from top of basilar artery).

Front 5

Name 2 anastomes in the Circle of Willis.

Back 5

1.Anterior communicating artery (anastomes of the anterior cerebral artery).
2. Posterior communicating artery (connect internal carotids to the posterior cerebral arteries).