Arachnoid trabeculae

Arachnoid trabeculae are delicate strands of connective tissue that extend from the arachnoid mater to the pia mater in the brain and spinal cord. They are part of the meninges, the protective layers of tissue that surround the central nervous system.

Structure

The arachnoid trabeculae are composed of collagen and elastic fibers. They form a web-like structure that helps to support the arachnoid mater and maintain the subarachnoid space, which is filled with cerebrospinal fluid.

Function

The primary function of the arachnoid trabeculae is to provide structural support to the arachnoid mater and maintain the subarachnoid space. This space is crucial for the circulation of cerebrospinal fluid, which provides nutrients to the brain and spinal cord, removes waste products, and acts as a shock absorber to protect these delicate structures.

Clinical significance

Damage or disease affecting the arachnoid trabeculae can lead to a variety of medical conditions. For example, meningitis can cause inflammation of the meninges, including the arachnoid trabeculae. This can lead to symptoms such as headache, fever, and stiff neck. In severe cases, it can cause serious complications such as seizures or brain damage.

See also

• Arachnoid mater
• Pia mater
• Meninges
• Cerebrospinal fluid