Vascular organ of lamina terminalis

Vascular Organ of Lamina Terminalis

The Vascular Organ of Lamina Terminalis (VOLT) is a specialized structure located in the brain, specifically in the anterior wall of the third ventricle. It is part of the circumventricular organs (CVOs), a group of structures in the brain characterized by their extensive vasculature and lack of a blood-brain barrier.

File:Vascular Organ of Lamina Terminalis.jpg

Illustration of the Vascular Organ of Lamina Terminalis

Anatomy

The VOLT is situated in the lamina terminalis, a thin membrane that stretches from the optic chiasm to the anterior commissure. It is one of the smallest CVOs, but despite its size, it plays a crucial role in the body's homeostatic mechanisms.

Function

The VOLT is involved in several physiological processes, including the regulation of body temperature, thirst, and water balance. It is also believed to play a role in cardiovascular regulation. The VOLT's lack of a blood-brain barrier allows it to monitor changes in the composition of the blood and respond accordingly.

Clinical Significance

Due to its location and functions, the VOLT is implicated in several pathological conditions. These include dehydration, hypertension, and certain neurological disorders. Further research is needed to fully understand the VOLT's role in these conditions.

See Also

• Circumventricular organs
• Lamina terminalis
• Blood-brain barrier