Trabeculae carneae

Trabeculae carneae

Infobox Anatomy
Name = Trabeculae carneae
Latin = trabeculae carneae cordis
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DorlandsSuf = 12815113
The trabeculae carneae (columnae carneae, or fleshy beams), are rounded or irregular muscular columns which project from the whole of the inner surface of the ventricle, with the exception of the conus arteriosus.

Types

They are of three kinds:
* some are attached along their entire length on one side and merely form prominent ridges,
* others are fixed at their extremities but free in the middle,
* while a third set (musculi papillares) are continuous by their bases with the wall of the ventricle, while their apices give origin to the chordæ tendineæ which pass to be attached to the segments of both the mitral valve and the tricuspid valve.

Function

The purpose of the trabeculae carnae is most likely to prevent suction that would occur with a flat surfaced membrane and thus impair the heart's ability to pump efficiently.

ee also

* Trabecula

External links

*
* (NormanAnatomyFig|heartinternalstructures - "TC" on diagram)
* [http://www.portfolio.mvm.ed.ac.uk/studentwebs/session1/group51/anatomy.htm Diagram] at University of Edinburgh -- fourth and fifth diagrams from top


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Look at other dictionaries:

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  • trabeculae carneae ventriculi dextri — [TA] the trabeculae carneae cordis in the right cardiac ventricle …   Medical dictionary

  • trabeculae carneae ventriculi sinistri — [TA] the trabeculae carneae cordis in the left cardiac ventricle …   Medical dictionary

  • trabeculae carneae cordis — [TA] irregular bundles and bands of muscle projecting from a great part of the interior of the walls of the ventricles of the heart. They occur as three types: as simple muscular ridges, as bundles attached at both ends but free in the middle, or …   Medical dictionary

  • мясистые перегородки — (trabeculae carneae, JNA) см. Перечень анат. терминов. 672 …   Большой медицинский словарь

  • Мяси́стые перегоро́дки — (trabeculae carneae, JNA) см. Pectinati …   Медицинская энциклопедия

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