Meninges

Question 1

What is the main purpose of the meninges?

Answer 1

To protect the brain and the spine!!

Question 2

What are the three membranes that meninges have?

Answer 2

-Dura mater
-Arachnoid mater
-Pia mater

Question 3

Dura mater

Answer 3

-outermost “tough” layer.
-the Dura mater IN THE BRAIN forms a sac like sinus that provides space for blood to return back to heart

Question 4

What are the 2 layers of dura mater In the brain?

Answer 4

1.Periosteal layer (lies agaisnt skull)
2.Meningeal layer (lies on top or arachnoid mater)

Question 5

Arachnoid mater

Answer 5

middle layer of the meninges. filled with lymph fluid and it decreases friction in the brain

Question 6

Pia mater

Answer 6

-innermost layer
-covers the brain directly
-has blood vessles that supply brain with blood.
-Filled with CSF to help with nutrient and gas exchange

Question 7

What is meningitis?

Answer 7

A bacterial infection of meninges covering the brain and/or spinal cord

Question 8

What happens often after some head trauma?

Answer 8

Blood hemoraging in the subdural space. This could cause permenant damage!!