Lecture 21 - Meninges and ventricular system

Question 1

How many layers make up the meninges?

Answer 1

3

Question 2

What are the 3 layers of the meninges?

Answer 2

Dura mater, arachnoid, Pia mater

Question 3

What is the outermost layer of the meninges?

Answer 3

Dura mater

Question 4

What layer of the meninges sits adjacent to the bone of the cranium?

Answer 4

Dura mater

Question 5

What is the structural characteristic of the dura mater?

Answer 5

Dense, fibrous, tough

Question 6

What is the structure of the dura mater?

Answer 6

Made of two layers (outer and inner) that are tightly adhered to each other except when gaps called venous sinuses form, or the inner layer forms dural folds in prominent fissures

Question 7

What does the inner layer of the dura mater form, when it clings to major sulci?

Answer 7

Dural fold

Question 8

What are dural folds formed from?

Answer 8

Inner layer of the dura mater

Question 9

What is the purpose of the dural folds?

Answer 9

Seperate major divisions of the brain, provide stability of the brain within the cranium.

Question 10

What are the 3 major dural folds?

Answer 10

Falx cerebri, Falx cerebelli, Tentorium cerebelli.