PROTECTIVE MECHANISM OF THE CNS

Question 1

CRANIUM

Answer 1

• encloses and protects the brain and its associated structures

Question 2

MENINGES

Answer 2

• protective membranes of the brain and spinal cord.
• 3 layers
  - Dura mater
  - Arachnoid
  - Pia mater

Question 3

CSF

Answer 3

• Creates a protective buoyant area for the brain and
  spinal cord to float in
  - Exerts pressure on the spinal cord and brain but
  more so when standing
  - Circulates in ventricles and subarachnoid space

Question 4

VENTRICULAR SYSTEM

Answer 4

• Small cavities in the brain.

Question 5

VERTEBRAL COLUMN

Answer 5

• Intervertebral disk between each vertebrae, except for
  sacral and coccygeal vertebrae as they are fused.
  
  • Absorb shock
  • Can rupture or protrude and cause compression of
    spinal cord or nerve roots.