Third ventricle

Definition

The third ventricle is a narrow, funnel-shaped cavity filled with cerebrospinal fluid (CSF) located in the center of the brain, between the two halves of the thalamus. It plays a crucial role in protecting the brain by cushioning it and maintaining a stable environment.

Related terms

Cerebrospinal Fluid: A clear, colorless body fluid found in the brain and spinal cord, acting as a cushion for the brain's cortex, providing basic mechanical and immunological protection.

Thalamus: A large mass of gray matter deeply situated in the forebrain at the topmost portion of the diencephalon, involved in sensory and motor signal relay and regulation of consciousness and sleep.

Lateral Ventricles: Two large cavities located within the cerebral hemispheres, producing cerebrospinal fluid that fills these cavities and circulates around the brain and spinal cord