As we see from the arm muscle diagram, the four-arm muscles are pectoralis major, latissimus dorsi, deltoid, and rotator cuff muscles connected to the humerus and move the arm. In addition to this, the muscles that move the forearm are located near the humerus, and those are triceps brachii, biceps brachii, brachialis, and brachioradialis. As per the following labeled diagram, the anterior compartment is also located in front of the humerus. As the arm muscle diagram illustrates, biceps brachii is often referred to as your biceps, and it contains two heads that start at the front and back of a human's shoulder before joining together as the elbow position.
