Brain support system

Question 1

Meninges

Answer 1

Protective tissue/membranes of the brain

1. Dura mater
2. Arachnoid membrane
3. Pia mater

Question 2

Dura mater

Answer 2

most outer layer
-two special dural folds :
Falx (separates left and right hemispheres)
Tentorium (separates cerebrum from the cerebellum)

Question 3

Arachnoid membrane

Answer 3

2. middle layer

Question 4

Subdural space

Answer 4

between dura and arachnoid membranes

Question 5

Pia mater

Answer 5

3. third layer, closely attached to the brain and spinal cord. Has many blood vessels reaching deep into the brain

Question 6

Cerebrospinal fluid

Answer 6

Plasma that surrounds brain and spinal cord
Functions. Produced from choroid plexus`
1. Protection- support and cushion
2. Buoyancy (weight reducing)
3. Chemical stability- allows proper functioning

Question 7

Ventricles

Answer 7

1. Lateral ventricles (left and right )- located respective hemispheres of cerebrum
2. third ventricle- between right and left thalamus
3. fourth ventricle - receives CSF from third ventricle via cerebral aqueduct. From it fluid drains into central spinal canal and subarachnoid cysterns