Meninges

Question 1

What are the layers of the meninges?

Answer 1

Dura mater:
- Periosteal layer
- meningeal layer

Arachnoid mater

Subarachinoid space

Pia mater

Question 2

What is the Dura mater?

Answer 2

Periosteal layer - attached to bone

Meningeal layer - in contact with arachnoid Mater

Question 3

What is the arachnoid mater?

Answer 3

Spider resemblance

Lines the dura mater

• trabeculae project from the internal surface across the subarachinoid space, and are continuous with pia mater

Question 4

What is the subarachinoid space?

Answer 4

Fluid filled space, containing cerebrospinal fluid and blood vessels.

Arachnoid villi resort CSF into venous system.

Question 5

What is the pia mater?

Answer 5

Membrane attached to surface of brain

As it adheres to brain surface it enters in the sulci of the brain.

Question 6

What are the dural folds and their function?

Answer 6

Question 7

What artery supplies the dura and the calvaria?

Answer 7

Middle meningeal artery

Anterior, middle, accessory and posterior

Question 8

What would cause an extradural hematoma?

Answer 8

Haemorrhage of Anterior middle meningeal artery

Question 9

What would cause a sub dural hematoma

Answer 9

Haemorrhage of bridging veins between sinus and cerebral vein

Question 10

What would cause a sub arachinoid hematoma?

Answer 10

Haemorrhage of a cerebral artery within the sub arachinoid space