Medial cutaneous nerve of arm

The medial cutaneous nerve brachii ( " inner-side nerve skin of the upper arm ," Wrisberg nerve) is the smallest nerve of the brachial plexus ( brachial plexus ) of man. It receives nerve fibers of the eighth cervical and first thoracic nerve (see also spinal nerve ). He runs through the armpit and is thereby the Axillary ( axillary vein ) and has connections with the nerve intercostobrachial. Then he pulls medial to the brachial artery ( brachial artery ) to the center of the upper arm, where it pierces the Oberarmfaszie and branches into the skin of the lower third of the upper arm. The medial brachial cutaneous nerve nerve supplies a strip-shaped area of ​​skin on the inner surface of the upper arm elle -side up to the elbow, which is its autonomous zone.