Anterior: Pectoralis major Pectoralis minor Posterior: Subscapularis Teres major Latissimus dorsi Medial : Serratus anterior and thoracic wall Lateral: Intertubercular sulcus /bicipital groove NOTE :STUDENTS OFTEN CONFUSE TERES MINOR INSTEAD OF TERES MAJOR IN THE POSTERIOR WALL OF AXILLA(VISUAL LEARNERS MAY GET IT RIGHT π)