Brain

Question 1

Structures to name on a CT head. What lies immediately lateral to the anterior horn of the lateral venricle?

Answer 1

Head of caudate nucleus.

Question 2

Structures to name on a CT head. What lies immediately lateral to the 3rd ventricle, forming the wall of the 3rd ventricle?

Answer 2

Thalamus.

Question 3

Name the arteries that supply the brain, and their origins.

Answer 3

Posterior circulation: Vertebral arteries, Basilar artery, AICA, PICA, PCA, Posterior communicating artery from PCA to internal carotid. Anterior circulation: Internal carotid divides into ACA + MCA. Anterior communicating artery.

Question 4

What is the arterial supply to the brain?

Answer 4

ACA: medial surface of cerebral hemispheres + frontal lobe. MCA: lateral surface of temporal + parietal lobes PCA: occipital lobe

Question 5

Structures to name on a CT head. What are the important structures to name?

Answer 5

4 lobes: Frontal, Parietal, Temporal, Occipital. Lateral ventricle. Falx. Internal capsule. Thalamus.

Question 6

Describe the venous drainage of the cerebral hemispheres.

Answer 6

Superior sagittal sinus –> confluence of sinuses

Inferior sagittal sinus merges with Great cerebral vein to form the straight sinus –> confluence of sinuses

All eventual drain into the internal jugular veins.

(2/3 bold to pass)