Long head of triceps brachii

Arms

Origin: Infraglenoid tubercle of the scapula
Insertion: Olecranon of the ulna
Action: Extends the elbow; also extends and adducts the arm at the shoulder
Nerve supply: Radial nerve (C6–C8)

The only triceps head that crosses the shoulder, because it starts on the shoulder blade. Raising the arm overhead stretches it most, which is why overhead extensions are used to train it.

Also works in

Exercises listed for the triceps brachii as a whole

Long head of triceps brachii anatomy page →

Exercises that train the long head of triceps brachii

Chin-up — assists

Exercises listed for the triceps brachii as a whole

Parallel bar dip — main mover
Triceps pushdown — main mover
Lying triceps extension — main mover
Barbell bench press — assists
Incline bench press — assists
Push-up — assists
Overhead press — assists

Other parts of the triceps brachii

Sources

Last updated 18 October 2026. For education only — not medical advice, and not reviewed by a clinician.