pectoralis

American  

[pek-tuh-ral-is, -rey-lis, -rah-] / ˌpɛk təˈræl ɪs, -ˈreɪ lɪs, -ˈrɑ- /

noun

Anatomy.

pectorales plural

1. either of two muscles on each side of the upper and anterior part of the thorax, the action of the larger pectoralis major assisting in drawing the shoulder forward and rotating the arm inward, and the action of the smaller pectoralis minor assisting in drawing the shoulder downward and forward.

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Other Word Forms

Noun Inflected Forms

• pectorales
  plural

Etymology

Origin of pectoralis

< Latin pectorālis; see pectoral

Example Sentences

See Examples For:

pectoralis pectorales

Another movement that uses a “T” strap stretches the pectoralis minor muscle, a relatively small muscle in the chest that gets a heavy workout from stroking into a wave.

From Washington Times ● Jan. 31, 2015

Anibal Sanchez went on the disabled list with a major right pectoralis strain and isn't expected to return until next month.

From Reuters ● Aug. 16, 2014

The large muscle on the chest, the pectoralis major, is an example of a convergent muscle because it converges on the greater tubercle of the humerus via a tendon.

From Textbooks ● Jun. 19, 2013

The pectoralis major is thick and fan-shaped, covering much of the superior portion of the anterior thorax.

From Textbooks ● Jun. 19, 2013

This large pinnate muscle converges, passes through the foramen triosseum, and inserts by a tendon on the external tuberosity of the humerus, immediately proximal to the insertion of M. pectoralis thoracica.

From Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae by Jenkinson, Marion Anne

When they want to move a little they gently protrude themselves with their pinnae pectorales; but it is with their strong muscular tails only that they and all fishes shoot along with such inconceivable rapidity.

From The Natural History of Selborne by White, Gilbert

The musculi pectorales so swelled, and the cartilago ensiformis so singularly raised, that the chest of the corpse touched the mouth.

From Sidonia, the Sorceress : the Supposed Destroyer of the Whole Reigning Ducal House of Pomerania — Volume 2 by Meinhold, Wilhelm