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To orient yourself, note the following bony landmarks, all of which are easily palpable: clavicle, coracoid process and acromion.

Immediately under the skin, the pectoralis major, deltoid, and trapezius muscles can be palpated.

The clavipectoral triangle (or deltopectoral triangle), which contains the cephalic vein, is bordered by the clavicle, pectoralis major muscle and deltoid muscle.

Finally, remember that the neurovascular bundle containing the axillary artery, axillary vein and brachial plexus courses under the clavicle and deep to the pectoralis major and minor before coursing into the arm.



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