Axillary Pit

Axillary fossa - This is a depression in the armpit area, which is the site of attachment of muscles and blood vessels to the humerus. It is shaped like a semicircle and is located on the back of the humerus, between the deltoid muscle and the pectoralis major muscle.

The axillary fossa plays an important role in the movement of the arm. It provides stability to the shoulder joint and allows muscles and blood vessels to move freely in this area. In addition, it is a place for the passage of nerves and blood vessels that provide nutrition and innervation to the axillary region.

Injuries or illnesses related to the armpit may cause pain and impairment of arm function. For example, if the armpit becomes inflamed or if the muscles and ligaments that attach to it are damaged, pain and limited mobility may occur. In such cases, it is necessary to consult a doctor for diagnosis and treatment.

Overall, the axillary fossa is an important anatomical structure that plays a key role in the functioning of the arm and shoulder joint. Knowing its anatomy and functions can help avoid injury and disease in this area and improve your quality of life.



The axillary fossa is the anatomical space between the anterior superior iliac spine, the height of the greater triangle and the posterior superior iliac spine. The length of the hole is about six centimeters and the depth is three centimeters. There are two arteries in the fossa. Due to the fact that this is an important artery, there is no access to the surface even during an examination. Here there are small and deep lymphatic vessels that make up the axillary trunks, for the connection of which the axillary fossa serves. The structure of this axillary fossa consists of a number of elevations and niches.

The pectoralis major muscle forms several tubercles and ridges. One of them is the upper one, which is located opposite the collarbone. On the back side there is the scapular tubercle, the posterior ridge of the artery, and the anterior ridge of the axillary nerve. The greater pectoral tubercle (sternal) is located