Details of third ventricles of brain for Neurology and Neurosurgery

1. THIRD VENTRICLE
DR SAMEEP KOSHTI

4. • The lateral wall is formed by
– the medial surface of the thalamus superiorly and
– the hypothalamus inferiorly
– These two structures are separated by the hypothalamic
sulcus.
• The lateral wall is limited
– superiorly by the stria medullaris thalami.
• The lateral walls are joined by the interthalamic
connection.

8. • The blood supply of the tela choroidea and,
therefore also of the choroid plexuses of the third
and lateral ventricles is derived from:
– the choroidal branches of the internal carotid and
basilar arteries.

17. ETV

18. The right lateral
ventricle.
choroid plexus, and
the thalamostriate vein
The foramen of Monro is prominent.
mammillary bodies and the floor of the
third ventricle.
The septum pellucidum
The choroid fissure is just next to the
choroid (to its left).