medial head

It lies between the lateral and medial heads.

The muscle is divided into three heads - the lateral head, long head and medial head.

The medial muscular branches supply the medial head of the Triceps brachii.

The medial head is mostly covered by the lateral and long heads, and is only visible distally on the humerus.

Anatomical abnormalities involving the medial head of gastrocnemius muscle results in popliteal artery entrapment syndrome.

At its upper part is the adductor tubercle and behind it is a rough impression which gives origin to the medial head of the gastrocnemius.

Baker's cysts arise between the tendons of the medial head of the gastrocnemius and the semimembranosus muscles.

Triceps brachii (lateral and medial heads)

The branch for the latter muscle is a long, slender filament, which descends in the substance of the medial head of the Triceps brachii.

The patient was treated with myotomy of the medial head of the gastrocnemius muscle and concomitant endarterectomy of the popliteal artery.

Nearly the whole of this surface is covered by the lateral and medial heads of the Triceps brachii, the former arising above, the latter below the radial sulcus.

With the lateral and medial heads of the triceps innervated, the radial nerve emerges from the radial groove on the lateral aspect of the humerus.

Finally, the femoral artery and vein exit via the inferior foramen (usually called the hiatus) through the inferior space between the oblique and medial heads of adductor magnus.

The lateral head originates from the lateral condyle of the femur, while the medial head originates from the medial condyle of the femur.

That to the medial head is a long, slender filament, which lies close to the ulnar nerve as far as the lower third of the arm, and is therefore frequently spoken of as the ulnar collateral nerve.

The medial superior genicular, a branch of the popliteal artery, runs in front of the Semimembranosus and Semitendinosus, above the medial head of the Gastrocnemius, and passes beneath the tendon of the Adductor magnus.

The nerve will first give off branches to the medial head of the triceps brachii and then enter a groove on the humerus, the radial sulcus (AKA spiral groove), where it innervates the lateral head of the triceps.

The lateral and medial heads attach to the back of the humerus bone and the long head attaches just behind the shoulder socket on one end; all three heads combine and attach to the back of your elbow on the other.

The medial head is formed predominantly by small type I fibers and motor units, the lateral head of large type IIb fibers and motor units and the long head of a mixture of fiber types and motor units.