Pectoralis Anatomy

The pectoralis major from latin pectus meaning breast is a thick fan shaped muscle situated at the chest of the human body. It makes up the bulk of the chest muscles and lies under the breast.

Anatomy And Functions Of The Major Pectoralis Muscle Kenhub

Beneath the pectoralis major is the pectoralis minor a thin triangular muscle.

Pectoralis anatomy. Anatomy and function the pectoralis major muscle is a fan shaped muscle with 3 heads originating from clavicular sternal and abdominal origins. Depending on the position of the humerus the pectoralis major muscle can adduct flex and internally rotate the humerus against a stable thorax. Originates from the 3rd 5th ribs and inserts into the coracoid process of the scapula.

The clavicular head takes origin from the medial one half to two thirds of the clavicle. Pectoralis muscle any of the muscles that connect the front walls of the chest with the bones of the upper arm and shoulder. The pectoralis major muscle is a strong fan shaped muscle of the shoulder joint.

It is also an accessory muscle of respiration when the shoulders are fixed in an elevated position. Against a fixed humerus the pectoralis muscle acts as a climbing muscle pulling the thorax upward. It is a thick fan shaped muscle that lies underneath the breast tissue and forms the anterior wall of the axilla.

The pectoralis major is the superior most and largest muscle of the anterior chest wall. Pectoralis minor is a tonic muscle that tends to be overactive and prone to tightness. Furthermore it participates in forming the anterior wall of the axilla.

Stabilises the scapula by drawing it anteroinferiorly against the thoracic wall. 6 in neurokinetic therapy nkt pectoralis minor is considered the king of compensation as it tends to be overactive for an inhibited or under active serratus anterior. The innervation is carried by the medial and lateral pectoral nerves c5 t1 direct branches of the brachial plexus.

It decisively shapes the surface anatomy of the breast. Pectoralis major and pectoralis minor. There are two such muscles on each side of the sternum breastbone in the human body.

Pectoralis Minor Muscle Pt Master Guide Pt Master Guide