67. IV VENTRICLE

Question 1

What is the fourth ventricle?

Answer 1

The fourth ventricle occurs at the brainstem, between the cerebellum and pons. It is diamond or tent-shaped and adds to CSF circulation.

Question 2

What openings does the fourth ventricle contain?

Answer 2

The fourth ventricle contains three openings: the median aperture (of Magendie) and the lateral apertures (of Luschka).

Question 3

What does the fourth ventricle contain?

Answer 3

The fourth ventricle contains the choroid plexus, which contributes to the production of CSF.

Question 4

What can happen if there is an impediment or blockade in CSF flow?

Answer 4

Impediment or blockade of the CSF flow, such as by a tumor or malformation of the cerebellum, can lead to hydrocephalus, a build-up of CSF that raises intracranial pressure.