Muscles intercostaux externes - Musculi intercostales externi

Hiérarchie anatomique

Termes généraux > Myologie > Muscles du thorax > Muscles intercostaux externes

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Description

The external intercostal muscles (Musculi intercostales externi) occupy the intercostal spaces superficially from ventral extent of levator costarum to costochondral junction, and do not extend as far as the sternum like the internal intercostal muscles. The fibers of the external intercostal muscles are orientated perpendicular to the ones of the internal intercostal muscles.

In dogs:

Origin: lower border of ribs

Insertion: upper border of rib below

Action: inspiration, to draw the ribs together so as to enlarge the thoracic cavity

Nerve: Intercostal nerves one to twelve.


Text by Antoine Micheau, MD - Copyright IMAIOS
Miller's Anatomy of the Dog, 4th Edition - Evans & de Lahunta- Elsevier
Illustrated Veterinary Anatomical Nomenclature - 3rd edittion - Gheorghe M. Constantinescu, Oskar Schaller - Enke

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