NEET PG DENTAL EXAM

Detailed explanation-1: -The axillary artery commences from the subclavian artery at the outer border of the first rib and terminates when it becomes the brachial artery at the outer border of the teres major muscle.

Detailed explanation-2: -The axillary artery enters the axilla by passing behind the midpoint of the clavicle on the outer edge of the first rib. The axillary artery is divided into three parts by its relation to pectoralis minor muscle: the first part is proximal to pectoralis minor. the second part is posterior to pectoralis minor.

Detailed explanation-3: -Beyond the first rib where it passes underneath the clavicle, the subclavian artery becomes the axillary artery and passes underneath the pectoralis minor muscle.

Detailed explanation-4: -The axillary artery becomes the brachial artery (figure 4) at the lower margin of the teres major muscle. The brachial artery passes between the biceps and triceps muscles, accompanied by the ulnar and median nerves adjacent to the humerus, and supplies the soft tissues of the arm (figure 5).