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A trabecula (plural trabeculae. From Latin for small beam.) is a small, often microscopic, tissue element in the form of a small beam, strut or rod, generally having a mechanical function, and usually but not necessarily composed of dense collagenous tissue.
Additional recommended knowledge
On histological section, a trabecula can look like a septum, but in three dimensions they are topologically distinct, with trabeculae being roughly rod or pillar-shaped and septa being sheet-like.
When crossing fluid-filled spaces, trabeculae may have the function of resisting tension (as in the penis) or providing a cell filter (as in the eye.)
Examples of trabeculae
Diminutive form of Latin trabs, which means a beam or bar. In the 19th century, the neologism trabeculum (with an assumed plural of trabecula) became popular, but is less etymologically correct. Trabeculum persists in some countries as a synonym for the trabecular meshwork of the eye, but this can be considered poor usage on the grounds of both etymology and descriptive accuracy.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Trabecula". A list of authors is available in Wikipedia.|