The medial head of the triceps brachii, a robust arm muscle, is positioned on the posterior aspect of the upper arm, contributing to elbow extension.

Origin:
Arising from the posterior humerus, below the radial groove, the medial head of the triceps brachii has its origin along the upper arm.

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 medial head of the triceps brachii is extension at the elbow joint. It works in coordination with the other heads of the triceps brachii to straighten the arm. This muscle is particularly active during activities involving pushing and extending the elbow, contributing to strength and stability during various upper limb movements.

Best Exercises for the Triceps Medial Head
The medial head of the triceps assists in elbow extension and is active across most triceps exercises, particularly during controlled and lower-load movements.

Primary Isolation Exercises
Triceps Pushdown

Supporting Movements
Overhead Triceps Extension
Bar Dips (Neutral Grip)

How to Emphasize the Triceps Medial Head
👉 Use controlled, moderate loads with strict form
👉 Focus on full range of motion during extension
👉 Maintain constant tension throughout the movement
👉 Avoid using momentum or excessive weight

Explore Exercise Technique and Execution
Each exercise listed above includes a full breakdown of proper form, muscle involvement, biomechanics, and safety considerations. Select an exercise to learn how to train the triceps effectively.