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Beneath the pectoralis major is the pectoralis minor muscle. The pectoralis major arises from parts of the clavicle and sternum , costal cartilages of the true ribs , and the aponeurosis of the abdominal external oblique muscle ; it inserts onto the lateral lip of the bicipital groove .
Pectoralis minor is a thin, triangular muscle located beneath the pectoralis major. It attaches to the ribs, and serves to stabilize the scapula, the large bone of the shoulder. The pectoral fascia is a thin layer of tissue over the pectoralis major, extending toward the latissimus dorsi muscle on the back.
The base of each breast is attached to the chest by the deep fascia over the pectoralis major muscles. The base of the breast is semi-circular, however the shape and position of the breast above the surface is variable. [35] The space between the breast and the pectoralis major muscle, called retromammary space, gives
The muscle which can 'cancel' or to some degree reverse the action of the muscle. Muscle synergies are noted in parentheses when relevant. O (Occurrences) Number of times that the named muscle row occurs in a standard human body. Here it may also be denoted when a given muscles only occurs in a male or a female body.
The sternalis muscle is an anatomical variation that lies in front of the sternal end of the pectoralis major runs along the anterior aspect of the body of the sternum. The sternalis muscle often originates from the upper part of the sternum and can display varying insertions such as the pectoral fascia , lower ribs , costal cartilages , rectus ...
In addition to acute pain, I noticed a deformity of my chest muscle near the shoulder. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ...
Lateral border of Pectoralis Major [2] (medially) Medial border of Deltoid muscle [3] (laterally) It contains the cephalic vein, [4] and deltopectoral fascia, which is a layer of deep fascia that invests the three structures that make up the border of the triangle.
The deltopectoral groove is an indentation in the muscular structure between the deltoid muscle and pectoralis major. [ 1 ] It is the location through which the cephalic vein passes and where the coracoid process is most easily palpable.