Protection of Brain Flashcards
1
Q
protective structures of brain (4)
A
- skull
- meninges
- CSF cushion
- blood-brain barrier
2
Q
ventricles
A
- 4 (3 in brain, one drains into spinal cord)
- form CSF using blood plasma permeating through choroid plexus
3
Q
choroid plexus
A
- network of blood vessels within ventricles
- important in CSF production
4
Q
meninges
A
- 3 layers of connective tissue membranes
- cover and protect CNS organs
- enclose CSF
5
Q
dura mater
A
- outer meninx
- leathery
- double-layered
6
Q
arachnoid meninx
A
- loose middle meninx
- separated from dura mater via subdural space
7
Q
pia mater
A
- thin, innermost layer of connective tissue
- tightly attached to brain
8
Q
subarachnoid space
A
- between pia mater + arachnoid meninx
- filled with CSF
- contains blood vessels
9
Q
purpose of CSF
A
- provides buoyancy by bathing brain in fluid –> brain floating in CSF is lighter
- cushions brain and spinal cord
10
Q
subdural space
A
- separates dura mater + arachnoid meninx
