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The ulnar nerve is a terminal branch of the medial cord of the brachial plexus. It contains mainly fibers from the anterior rami of spinal nerves C8 and T1, but may sometimes carry C7 fibers as well. From its origin, the ulnar nerve courses distally through the axilla, arm and forearm into the hand.
The ulnar nerve is a major peripheral nerve of the upper limb. In this article, we shall look at the applied anatomy of the nerve - its anatomical course, motor functions and cutaneous innervation. We shall also consider the clinical correlations of the damage to the ulnar nerve.
The ulnar nerve is responsible for the pain, or ‘funny bone’, sensation that occurs if the elbow bone is suddenly struck. Continual pressure on the elbow or inner forearm may cause damage.
Origin. Ulnar nerve comes from the medial cord of the brachial plexus (C8-T1) Course. Arm. lies posteromedial to brachial artery in anterior compartment of upper 1/2 arm. pierces medial IM septum at the arcade of Struthers ~ 8cm from medial epicondyle and lies medial to the triceps.
Anatomy. Where is the ulnar nerve? The ulnar nerve is one of five nerve branches of the brachial plexus. This nerve bundle sends sensory information and helps you move your shoulders, arms and hands. The brachial plexus starts as nerve roots in the cervical spine in the neck.
The ulnar nerve is one of the three main nerves of the upper limb and plays a critical role in both sensory and motor functions. It arises from the medial cord of the brachial plexus and primarily innervates parts of the forearm and hand.
The ulnar nerve is one of the 5 terminal branches of the brachial plexus, arising from the medial cord. It supplies motor and sensory innervation to the upper extremity. The ulnar nerve originates from contributions of the ventral rami of C8 and T1 nerve roots.
The ulnar nerve runs down the hand, where it passes behind the medial epicondyle of the humerus at the elbow. The ulnar nerve doesn’t give branches in the axilla or in the upper arm. It starts with muscular and cutaneous branches in the upper forearm and hand.
The world's most advanced 3D anatomy platform. Try it for Free. See these models in 3D with Complete Anatomy App. Origin. The ulnar nerve is the main nerve of the hand.
the Palmar Cutaneous Branch of the ulnar nerve arises midway along the arm, and travels under the antebrachial fascia – directly above the ulnar artery. the Palmar Cutaneous Branch pierces the antebrachial fascia in the distal third of the arm and innervates the skin of the ulnar half of the palm Ulnar artery. Antebrachial fascia Pisiform. FCU.