What are the lateral ventricles and where are they located?

The lateral ventricles are paired, C-shaped cavities located within the cerebral hemispheres. They are lined by ependyma and filled with cerebrospinal fluid (CSF), communicating with the third ventricle via the interventricular foramen (of Monro).

What are the main parts of the lateral ventricle?

Each lateral ventricle has four parts: Central Part (Body) in the parietal lobe, Anterior Horn in the frontal lobe, Posterior Horn in the occipital lobe, and Inferior Horn (the largest) in the temporal lobe.

What structures form the boundaries of the central part of the lateral ventricle?

The central part's boundaries include the floor (body of caudate nucleus, stria terminalis, thalamostriate vein, and thalamus), roof (body of corpus callosum), and medial wall (septum pellucidum).

What is the choroid plexus and what is its function in the lateral ventricles?

The choroid plexus is a tuft of capillaries that invaginates into the ventricle along the choroid fissure. Its primary function is to secrete cerebrospinal fluid (CSF), and it is present in the central part and inferior horn of the lateral ventricle.

How do the lateral ventricles communicate with other parts of the ventricular system?

Each lateral ventricle communicates with the third ventricle through the interventricular foramen (of Monro). This connection allows cerebrospinal fluid to flow between these cavities.

What is the collateral trigone in relation to the lateral ventricles?

The collateral trigone is the area where the posterior horn and inferior horn of the lateral ventricle diverge from each other.

What structures are found in the floor of the inferior horn of the lateral ventricle?

The floor of the inferior horn includes the hippocampus medially and the collateral eminence laterally.

Lateral Ventricles – Horns, Boundaries & Choroid Plexus

❓ Frequently Asked Questions