Pectoral muscles (cat)
From Wikipedia, the free encyclopedia
There are four pectoral muscles in a cat: pectoantibranchialis, pectoralis major, pectoralis minor, and xiphihumeralis.
Contents |
[edit] Pectoantebrachialis
Pectoantebrachialis muscle is just one-half inch wide, and is the most superficial in the pectoral muscles. Origin, manubrium of the sternum, Insertion, in a flat tendon on the fascia of the proximal end of the ulna, Action, draws the arm towards the chest.
[edit] Pectoralis major
The pectoralis major, also called, pectoralis superficialis, is a broad triangular portion of the pectoralis muscle which is immediately below the pectoantebrachialis. Origin, sternum and median ventral raphe, Insertion, Humerus, Action, draws the arm towards the chest.
[edit] Pectoralis minor
The pectoralis minor muscle is smaller than the Pectoralis major. However, most of its anterior border is covered by the pectoralis major. Origin, ribs 3-5, Insertion, coracoid process of scapula, Action, tipping of the scapula, elevation of ribs 3-5
[edit] Xiphihumeralis
The most posterior, flat, thin, and long strip of pectoral muscle is the Xiphihumeralis. It is a band of parallel fibers that is not found in humans, but in felines.
 |
This feline-related article is a stub. You can help Wikipedia by expanding it. |
