Definition
The biceps brachii is the full name for the muscle on the front of your upper arm, responsible for bending your elbow and rotating your forearm. Visualize it as the muscle that bulges when you flex your arm. It's named 'biceps' because it has two heads that originate from different points on the shoulder blade. Unlike a single-headed muscle, the biceps brachii provides more versatile movements. It works in conjunction with other muscles in your arm to perform various tasks, such as lifting and pulling.