The clavicular part is close to the deltoid muscle and contributes to flexion, horizontal adduction, and inward rotation of the humerus.
It emphasises the clavicular head of the pectoralis major more than an incline bench press.
Clavicular facet shown in red (click the image to enlarge).
At the neuromuscular junction, the lateral pectoral nerve provides motor input to the clavicular head of the pectoralis major.
The first heart sound is followed by a high-pitched holosystolic murmur at the apex, radiating to the back or clavicular area.
The sternocostal part is antagonistic to the clavicular part contributing to downward and forward movement of the arm and inward rotation when accompanied by adduction.
The connection from the main mesobronchi to the more anterior air sacs including the interclavicular, lateral clavicular, and pre-thoracic sacs known as the ventrobronchi region.
The muscle is divided into clavicular and sternal parts.
