Home Dictionary Tthird ventricle

third ventricle

third ventricle

Noun

pl: third ventricles

This term is a precise anatomical designation used exclusively in medical, neurological, and biological contexts. It describes a specific void within the ventricular system of the brain, and as such, it carries a neutral, descriptive tone devoid of emotional or metaphorical connotation.

Because it refers to a unique, singular anatomical structure within the human brain, it is treated as a countable noun in a technical sense (e.g., when comparing the third ventricles of different species), though it almost always appears in the singular when discussing human anatomy.

Meanings

Nounthird ventricle

A narrow, slit-like cavity located in the midline of the brain between the right and left lateral ventricles, containing cerebrospinal fluid.

The third ventricle is bounded laterally by the thalamus and the hypothalamus.

Examples

The third ventricle is located between the two halves of the diencephalon.

Health

Cerebrospinal fluid flows from the lateral ventricles into the third ventricle.

Health

Look at the MRI scan to see if there is any enlargement of the third ventricle.

Health

The walls of the third ventricle are lined with ependymal cells.

Health

I wonder if a tumor in the third ventricle could cause these neurological symptoms.

Health

The interthalamic adhesion partially crosses the lumen of the third ventricle.

Health

The third ventricle connects to the fourth ventricle via the cerebral aqueduct.

Health

We need to examine the floor of the third ventricle for any abnormalities.

Health

The choroid plexus within the third ventricle produces a portion of the brain's fluid.

Health

Last Updated: May 2026•Report an Error