Week 5 - The Ventricular System

Question 1

What are the boundaries of the body of the lateral ventricle?

Answer 1

Posterior – post. End of thalamus
Anterior – interventricular foramen
Superior – corpus callosum
Inferior – Caudate nucleus & lat. Margin of thalamus
Medially – septum pellucidum

The body of the lateral ventricle is a crucial structure in the brain’s ventricular system.

Question 2

What structure enters the lateral ventricle through the septum pellucidum?

Answer 2

Choroid plexus

The choroid plexus produces cerebrospinal fluid (CSF) within the ventricles.

Question 3

What are the boundaries of the anterior horn of the lateral ventricle?

Answer 3

Posterior – (N/A)
Anterior – frontal lobe
Superior – anterior part of corpus callosum
Inferior – caudate nucleus & sup. Surface of rostrum of corpus callosum
Medially – septum pellucidum & ant. Column of fornix

The anterior horn is important for understanding the anatomy of the lateral ventricles.

Question 4

What are the boundaries of the posterior horn of the lateral ventricle?

Answer 4

Posterior – Occipital lobe
Anterior – (N/A)
Superior – fibres of tapetum of corpus callosum
Inferior –
Medially – superior – splenial fibres
Inferior – calcarine sulcus

The posterior horn connects to the occipital lobe and plays a role in visual processing.

Question 5

What are the boundaries of the inferior horn of the lateral ventricle?

Answer 5

Posterior –
Anterior – temporal lobe
Superior – tapetum of corpus callosum & tail of caudate nucleus
Inferior – collateral eminence produced by collateral fissure
Medially – hippocampus

The inferior horn is associated with memory functions due to its proximity to the hippocampus.

Question 6

What is located in the chiasmatic/suprasellar cistern?

Answer 6

Located above the sella turcica & below hypothalamus

This cistern contains important vascular and neural structures related to the pituitary gland.