The Ventricular System

Question 1

What is the ventricular system

Answer 1

The ventricular system is a series of spaces in within the CNS which produces and allows circulation of the CSF

Question 2

Name some functions of CSF

Answer 2

High glucose concentration for metabolic activity

Helps cushion the brain and spinal cord within their bony cases

Helps hold the brain up within the skull and prevent it collapsing

Question 3

What produces CSF

Answer 3

The choroid plexus

Question 4

What structures make up the ventricular system (not including the drainage)

Answer 4

Two lateral ventricles

Interventricular foramen

Third ventricle

Aqueduct of midbrain

Fourth ventricle

Question 5

What structures does the fourth ventricle drain from/into

Answer 5

Central canal

Foramen of Luschka (lateral) - drain into subarachnoid space

Foramen of Magendie (midline) - drains into the subarachnoid space

Question 6

Where is CSF reabsorbed

Answer 6

CSF is reabsorbed by arachnoid granulations where it enters dural venous sinuses from the subarachnoid space and then enters the venous blood