Clavipectoral Fascia

The clavipectoral fascia extends from the clavicle to the axillary fascia. It surrounds the pectoralis minor muscle and the subclavius muscle located beneath the clavicle.

Axilla

The axilla is the space between the root of the upper limb and the chest wall. It is shaped like a truncated pyramid with a narrow apex and a wide base, with three walls.

Possible Question: Describe the boundaries of the axilla.

The axilla is the space between the root of the upper limb and the chest wall. This is in the shape of a truncated pyramid with a narrow apex and a wide base. It has three walls. The medial border is provided by serratus anterior, upper ribs and intercostal spaces. The anterior wall is provided by the pectoralis major muscle overlying the pectoralis minor and subclavius muscle. The posterior border is made up of subscapularis, teres major and latissimus dorsi, including the scapula. The base of the axilla is predominantly axillary fascia whilst the apex is bounded by the clavicle, superior border of the scapula and the first rib. Laterally we have the intertubercular groove of the humerus.

Major points: Medial  serratus anterior, upper ribs and intercostal spaces  Anterior  pectoralis major, pectoralis minor  Posterior  Subscapularis, teres major, latissimus dorsi, scapula  Lateral  intertubercular groove of the humerus  Base  axillary fascia  Apex  clavicle, superior border of the scapula and first rib.

Category: Anatomy Notes