Radial Nerve

The radial nerve is a nerve in the animal body that supplies the upper limb. It supplies the medial and lateral heads of the triceps brachii muscle of the arm, as well as all 12 muscles in the posterior osteofascial compartment of the forearm and the associated joints and overlying skin.

It originates from the posterior cord of the brachial plexus, carrying fibers from the ventral roots of spinal nerves C5, C6, C7, C8 & T1.

The radial nerve and its branches provide motor innervation to the dorsal arm muscles (the triceps brachii and the anconeus) and the extrinsic extensors of the wrists and hands; it also provides cutaneous sensory innervation to most of the back of the hand. The ulnar nerve provides cutaneous sensory innervation to the back of the little finger and adjacent half of the ring finger.

The radial nerve divides into a deep branch, which becomes the posterior interosseous nerve, and a superficial branch, which goes on to innervate the dorsum (back) of the hand.

Read more about Radial NerveCourse, Branches/Innervations, Additional Images

Other articles related to "radial nerve, radial, nerve, nerves":

Radial Tunnel Syndrome - Etiology
... The theory is that the radial nerve becomes irritated and/or inflamed from friction caused by compression by muscles in the forearm ... Some speculate that Radial Tunnel Syndrome is a type of repetitive strain injury (RSI), but there is no detectable pathophysiology and even the existence of this disorder ... The term "radial tunnel syndrome" is used for compression of the posterior interosseous nerve, a division of the radial nerve, at the lateral intermuscular septum of arm ...
Radial Nerve - Additional Images
... Brachial plexus with courses of spinal nerves shown Cross-section through the middle of upper arm Cross-section through the middle of the forearm The brachial artery Suprascapular and axillary nerves of ...
List Of Eponymously Named Medical Signs
... urine A Adie pupil William John Adie neurology ciliary nerve damage dilated pupil, poorly reactive but with normal near accommodation A Adson's sign Alfred Washington Adson vascular surgery thoracic outlet ... Louis Jacobsohn-Lask neurology pyramidal tract lesions stroking dorsal radial skin, with forearm in supination, elicits wrist and finger flexion B Bekhterev-Mendel reflex Vladimir Bekhterev, Kurt ... FrantiĊĦek Chvostek endocrinology hypocalcemia tapping over facial nerve elicits abnormal muscle contraction(s) C Claybrook sign Edwin Claybrook emergency ...
List Of Human Nerves
... The following is a list of nerves in the human body Accessory nerve Accessory obturator nerve Alderman's nerve Anococcygeal nerve Ansa cervicalis Anterior interosseous nerve Anterior ...
Triangular Interval Syndrome
... It is a condition where the radial nerve is entrapped in the triangular interval resulting in upper extremity radicular pain ... The radial nerve and profunda brachii pass through the triangular interval and are hence vulnerable ... interval with resultant entrapment of the radial nerve ...

Famous quotes containing the word nerve:

    The American people is out to get the kaiser. We are bending every nerve and every energy towards that end; anybody who gets in the way of the great machine the energy and devotion of a hundred million patriots is building towards the stainless purpose of saving civilization from the Huns will be mashed like a fly. I’m surprised that a collegebred man like you hasn’t more sense. Don’t monkey with the buzzsaw.
    John Dos Passos (1896–1970)