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Definition

noun

Trabeculae carneae, bands or bundles of muscular ridges projecting from the inner walls of the heart ventricles.

Supplement

Their structure is important to their role. Had the inner surface of heart ventricles been flat, suction could occur and this would impair the heart's ability to pump efficiently.

Synonyms:

• columnae carneae
• trabeculae carneae

Compare: papillary muscle
See also: ventricle, Reils band