Third Ventricle Part 2

Structure

 - slit like space

 - Lined by ependymal cells

Walls of third ventricle

Anterior = Anterior column of fornix, Anterior Commissure and Lamina terminalis

Posterior = Pineal body, Posterior commissure, Commencement of Cerebral aqueduct

Roof = Ependyma connecting two thalami

Floor = Optic chiasm, Infundibulum of pituitary, mamillary body, posterior perforated substance, Tegmentum of midbrain

Latera wall = Thalamus, hypothalamic sulcus

Foramina of third ventricle

1. 2x Foramen of Monroe (connects thrid ventricle to lateral ventricles)

2. Cerebral aqeduct (Sylvian aqueduct) - connects third ventricle to fourth ventricle

Recesses of third ventricle

1. Infundibular recess

2. Optic recess (chiasmatic recess)

3. Anterior recess (vulva of third ventricle)

4. Supra pineal recess

5. Pineal recess

Other Structures of Thrid ventricle

 - interthalamic adhesion

 -  hypothalamic sulcus

 - Choroid plexus - lies in roof and hangs from the tela chorodea