This large anterior chest muscle inserts on the anterior humerus and has its origins on the clavicle,upper ribs,and sternum.It allows a person to point towards an object directly in front of him.

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The description matches the pectoralis major muscle, which is responsible for movements such as adduction and flexion of the humerus, as well as medial rotation of the arm. It also plays a role in pushing movements, such as during a bench press exercise.

This Large Anterior Chest Muscle Inserts on the Anterior Humerus