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The clavipectoral triangle (also known as the deltopectoral triangle) is an anatomical region found in humans and other animals. It is bordered by the following structures:
Superficial muscles of the chest and front of the arm.
Superficial veins of the upper limb.
It contains the cephalic vein, and deltopectoral fascia, which is a layer of deep fascia that invests the three structures that make up the border of the triangle. The deltoid branch of the thoracoacromial artery also passes through this triangle, giving branches to both the deltoid and pectoralis major muscles.
- Anatomy photo:04:03-0101 at the SUNY Downstate Medical Center - "Pectoral Region: Deltopectoral Triangle"