The triceps, or triceps brachii (Latin for "three-headed muscle of the arm"), is a large muscle on the back of the upper limb of many vertebrates. It consists of three parts: the medial, lateral, and long head.

Discover the best and worst triceps exercises ranked for mass, strength, and definition. Learn what to prioritize—and what to skip—for serious arm gains and functional upper body power.

May 20, 2024 · Learn the most effective triceps exercises to target all three tricep heads and work the muscles from all angles to build strong triceps. Get detailed triceps workout instructions for triceps …

The triceps brachii is a large, thick muscle on the dorsal part of the upper arm. It often appears as the shape of a horseshoe on the posterior aspect of the arm.

Dec 20, 2025 · The triceps muscle is a main muscle of the upper arm, running from the top of the shoulder to the elbow at the back of the arm. When the triceps muscle contracts (shortens or …

The muscle that extends, or straightens, the arm is the triceps, which arises on the humerus and attaches to the ulna at the elbow; the brachialis and biceps muscles act to bend the arm at the elbow.

Mar 13, 2025 · Want to build bigger arms and strengthen your bench? Of course you do. Our list of the 15 best triceps exercises will help you get there.