The long head of the triceps brachii, a substantial arm muscle, runs along the posterior aspect of the upper arm, contributing to powerful elbow movements.

Origin:
Arising from the infraglenoid tubercle of the scapula, the long head of the triceps brachii has its origin on the shoulder blade.

Insertion:
The muscle inserts into the olecranon process of the ulna, forming the common tendon shared with the other heads of the triceps brachii.

Function:
The primary function of the long head of the triceps brachii is extension at the elbow joint. It plays a significant role in straightening the arm and is actively engaged in movements such as pushing, lifting, and supporting body weight during activities like dips or triceps-focused exercises. Additionally, the long head contributes to overall stability of the elbow and upper limb during various dynamic movements.

Overhead Triceps Press

Triceps Push-Down

45-Degree Triceps Extension

Triceps Kickback

Bench Press

Pushup