Lecture28: White Matter And Internal Capsule

Question 1

What do association fibres do?

Answer 1

Connect 2 areas on the same side of the cerebral hemisphere

Question 2

What do short association fibres do?

Answer 2

Connect adjacent gyri

Question 3

What do commisural fibres do?

Answer 3

Connect between the same 2 areas on both sides

Question 4

What does the anterior commisure do?

Answer 4

Connects the olfactory structures of both sides

Question 5

What does the posterior commisure do?

Answer 5

Connects between the visual structures on both sides

Question 6

What does the hippocampal commisure do?

Answer 6

Connects the hippocampus of both sides

Question 7

What is the greatest commissure?

Answer 7

The Corpus Callosum

Question 8

What is the curved anterior end of the corpus callosum called?

Answer 8

The Genu

Question 9

What is the thin part of the corpus callosum called?

Answer 9

The Rostrum

Question 10

What do projection fibres do?

Answer 10

They pass to or from the cerebral cortex

Question 11

What are the 2 types of Projection fibres?

Answer 11

Ascending and Descending

Question 12

What supplies the Genu?

Answer 12

Internal carotid artery

Question 13

What supplies the internal capsule?

Answer 13

Middle cerebral artery

Question 14

What does infarction of the internal capsule lead to?

Answer 14

Lower facial weakness, anesthesia, hemiparesis

Question 15

What does infarction of the internal capsule result from?

Answer 15

Occlusion of Lenticulostriate branches of the middle cerebral artery