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Triceps muscle, any muscle with three heads, or points of origin, particularly the large extensor along the back of the upper arm in humans. It originates just below the socket of the scapula (shoulder blade) and at two distinct areas of the humerus, the bone of the upper arm. The triceps brachii, or triceps , is a large, three-headed muscle in the posterior compartment of the arm. It is responsible for extending the forearm and maintaining upper limb stability. Triceps brachii is a three-headed (tri - three, cep - head) muscle of the arm. It represents the only constituent of the posterior muscle group of the arm, spanning almost the entire length of the humerus. 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 kickbacks, triceps dips, diamond push-ups, and more.
