Triceps Brachii-Medial Head

Muscle Origin

Posterior Humerus below the radial groove to the olecranon process of ulna.
Medial head: below the radial sulcus.
The triceps brachii muscle is the large muscle on the back of the upper limb. The medial head is mostly covered by the lateral and long heads, and is only visible distally on the humerus.

Insertion

The lateral head arises from the dorsal surface of the humerus, lateral and proximal to the groove of the radial nerve, from the greater tubercle down to the region of the lateral intermuscular septum.anatomy-model-muscles-arm-909-edited

Action

Extends elbow.

The triceps is an extensor muscle of the elbow joint and an antagonist of the biceps and brachialis muscles. It can also fixate the elbow joint when the forearm and hand are used for fine movements, e.g., when writing. Wiki

Innervation – Nerve control

Radial nerve.

All three heads of the triceps brachii are classically believed to be innervated by the radial nerve. However, a study conducted in 2004 determined that, in 20 cadaveric specimens and 15 surgical dissections on participants, the long head was innervated by a branch of the axillary nerve in all cases.

Artery

 

Antagonist muscles

All three heads of the triceps brachii are classically believed to be innervated by the radial nerve. However, a study conducted in 2004 determined that, in 20 cadaveric specimens and 15 surgical dissections on participants, the long head was innervated by a branch of the axillary nerve in all cases

Pictures of muscles

 

Trigger Point Referrals

 

Stretching description

 

Exercises

 

Injuries

 

Treatment

 

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