Final answer:
The pectoralis muscle is located in the chest area and is responsible for various arm movements.
Step-by-step explanation:
The muscle located in the chest area is the pectoralis muscle. It is a large muscle that covers the front of the chest and is commonly referred to as the "pecs". The pectoralis muscle is responsible for movements such as flexion, adduction, and medial rotation of the arm at the shoulder joint.
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