Cavum veli interpositi

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Cavum veli interpositi

The cavum veli interpositi is a cerebrospinal fluid (CSF)-filled space located within the brain. It is situated between the layers of the velum interpositum, a structure formed by the pia mater and the arachnoid mater. This space is part of the subarachnoid space and is found in the region of the third ventricle.

Anatomy

The cavum veli interpositi is bordered superiorly by the fornix and inferiorly by the thalamus. It is continuous with the cisterna magna and the quadrigeminal cistern. The space is typically small and may not be visible in all individuals. However, it can become enlarged in certain pathological conditions.

Function

The primary function of the cavum veli interpositi is to serve as a conduit for the flow of cerebrospinal fluid within the brain. It plays a role in the circulation and distribution of CSF, which is essential for cushioning the brain, removing waste products, and maintaining intracranial pressure.

Clinical Significance

Enlargement of the cavum veli interpositi can be associated with various neurological conditions. It may be observed in cases of hydrocephalus, where there is an abnormal accumulation of CSF within the brain. Additionally, it can be seen in certain congenital anomalies and may be detected through imaging techniques such as magnetic resonance imaging (MRI) or computed tomography (CT) scans.

Related Structures

The cavum veli interpositi is closely related to other CSF-filled spaces and structures within the brain, including:

• Third ventricle
• Cisterna magna
• Quadrigeminal cistern
• Subarachnoid space
• Velum interpositum

See Also

• Cerebrospinal fluid
• Hydrocephalus
• Brain ventricles
• Pia mater
• Arachnoid mater