Ventricular System

Question 1

Lateral (inferior, posterior horns) ventricles

Answer 1

• more superior
  Anterior horn = begins at front of brain
  Posterior horn = posterior point of brain
  Inferior horn = wraps down and forward
  Function: production of CSF to cushion brain

Question 2

Foramen of Monro

Answer 2

• between lateral and 3rd ventricles

Question 3

Third ventricle

Answer 3

• center of ventricular system

Function = drainage and circulation of CSF to cushion brain

Question 4

Cerebral aqueduct

Answer 4

• connects third and fourth ventricles

- divides midbrain into 2 halves (anterior = peduncles, posterior = tectum)

Question 5

4th Ventricle

Answer 5

• extends down into BS

Function = drainage and circulation of CSF to cushion brain

Question 6

Central canal

Answer 6

• entrance to 4th ventricle

Question 7

Choroid plexus

Answer 7

• under corpus callosum
  *spongy ‘coral’ in lateral ventricles
• produces CSF
  Blood supply: anterior communicating artery

Question 8

Flow

Answer 8

1) Lateral ventricles
- -> 2) Monro foramina
- -> 3) 3rd ventricle
- -> 4) cerebral aqueduct
- -> 5) 4th ventricle
- -> 6) Luscka & Magendie foramina (exits 4th)
- -> 7) subarachnoid space
- -> 8) flows around SC and brain
- -> 9) absorbed thru arachnoid villi