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Definition Page:

"trabecula"

trabecula (Lat. diminutive of trabs, beam; trabeculae, a little beam). 1. In anatomy, any of the support strands of connective tissue that project into an organ and constitute part of the framework of that organ. 2. The network of osseous tissue making up cancellous structure of a bone.
t. carnea cordis (Lat. "beam (of the)heart muscle") -- Any of the thick muscular tissue bands that attach to the inner walls of the ventricles of the heart.