Axillary Cavity

The axillary cavity is the anatomical space between the chest wall and the axillary muscles, which is formed as a result of the fusion of the axillary spaces. This space is a continuation of the axillary cavity, located between the collarbone and the chest wall.

The axillary cavity has the shape of a triangle, the apex of which is located at the level of attachment of the axillary muscle to the chest wall, and the lateral sides are formed by the axillary muscles. It is bounded anteriorly by the clavicle, posteriorly by the chest wall, medially by the axillary muscle, and laterally by the pectoralis major muscle.

The axillary cavity contains blood vessels, nerves, lymph nodes and adipose tissue. In particular, the axillary nerve, axillary artery and axillary lymph node, which belongs to the axillary lymph node, pass here.

The functions of the axillary cavity include protection of the axillary vessels and nerves, as well as participation in the formation of the chest wall. In addition, this cavity can be used to diagnose and treat various diseases such as injuries and tumors.