Biceps Anatomy

Anatomy of the Biceps Muscle
The biceps muscle is located in the upper arm and works in conjunction with the triceps muscle.  The opposing partnership of the triceps and biceps, as an agonist and antagonist pairing, results in bending and straightening of the arm at the elbow. The way to differentiate the two major muscles in the upper arm is that the triceps muscle initiates the extension of the elbow and supination of the forearm, whereas the triceps muscle initiates the extension of the elbow. Basically, when the biceps contracts the triceps relaxes to allow ease of movement. This is often referred to as an agonist and antagonist partnership. Please note that the biceps muscle is often referred to as the biceps brachii.

Related Injuries
- Biceps Strain
-
Rupture of Biceps Tendon


Related Surgeries
- Biceps Tendon Repair

Referenced Material
Anatomica’s Body Atlas. (2002). San Diego, CA: Thunder Bay Press (pg. 154, 158)