Pectoralis muscle, any of the muscles that connect the front walls of the chest with the bones of the upper arm and shoulder. There are two such muscles on each side of the sternum (breastbone) in the human body: pectoralis major and pectoralis minor.
Pectoral muscles (colloquially referred to as ” pecs “) are the muscles that connect the front of the human chest with the bones of the upper arm and shoulder. Deep muscles of the chest, including pectoralis minor, serratus anterior, and subclavius (Gray 1918)
The pectoralis major is a paired, superficial muscle located on the anterior surface of the thoracic cage. If you’re a gym lover, you’ll hear these muscles also being referred to as the pecs muscles. The pectoralis major has a broad origin, based on which it is divided into three parts: clavicular part, sternocostal part and abdominal part.
The pectoral region is located on the anterior chest wall. It contains four muscles that exert a force on the upper limb: the pectoralis major, pectoralis minor, serratus anterior and subclavius. In this article, we shall look at the anatomy of the muscles of the pectoral region – their attachments, actions and innervation.
The pectoral muscle is the muscle group that is found at the front of the chest. Pectoralis major is the largest of these muscles and originates from the breastbone, ribs and collarbone. This muscle attaches to the humerus or the upper arm bone.
The pectoral muscles are a group of two muscles situated at the front of the chest (figure 1). The largest of which is the pectoralis major muscle which originates from the sternum (breast bone), ribs and collar bone and attaches to the upper arm bone (humerus).
Pectoralis Major Muscle lies in front of chest wall. The inner or medial tendon of the muscle originates from surface of breastbone (sternum) and collarbone (clavicle). The lateral or outer end of the muscle continues as lateral (outer) tendon and attaches to humerus. The inflammation of the Pectoralis Major Muscle and its Tendon is quite rare.
The pectoralis minor (pec minor) is a small thick muscle located in the chest. Trigger points (TrPs) in the muscle can cause pain in the chest, shoulder, arm, and hand. They can also contribute to muscle pain in the upper back between the shoulder blades as well as a band of pain just under the shoulder blades.
Chest Structure And Function Your chest is composed of two muscle groups: the large pectoralis major, and the smaller pectoralis minor underneath. The flat, thick pec major originates in a broad sweep along the anterior surface of the clavicle, down the sternum, and from the cartilage of the ribs.
Pause when you feel the stretch in the right pectoral muscle and hold for 20 seconds. Repeat on the left side. Show Instructions Tip. This chest stretch can be quite intense, especially if your chest is extremely tight. Move …