What is the primary function of the triceps muscle?

The primary function of the triceps muscle is to extend the elbow. Located at the back of the upper arm, the triceps brachii consists of three heads that converge into a single tendon. When the triceps contract, they pull on this tendon, resulting in the straightening (extension) of the elbow joint. This action is crucial for various movements, including pushing and throwing.

While other muscles are responsible for flexing the elbow or affecting the shoulder, the triceps specifically play a key role in extending the arm at the elbow joint, making this function essential in many activities like lifting objects and performing push-ups. Understanding the specific actions of muscles is vital for anyone studying exercise physiology, as it aids in designing effective training and rehabilitation programs.