BICEP

The biceps or biceps brachii is a large muscle that lies on the front of the upper arm between the shoulder and the elbow. Both did- heads of the muscle arise on the scapula and join to form a single muscle belly which is attached to the upper you-forearm. While the long head of the biceps crosses both the shoulder and elbow joints, its main function is at the elbow where it flexes and supinates the forearm.