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.
https://en.wikipedia.org/wiki/Radial_nerve
It is commonly believed that the radial nerve also provided motor innervation to the long head of the triceps. 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.
https://en.wikipedia.org/wiki/Radial_nerve
The radial nerve originates as a terminal branch of the posterior cord of the brachial plexus. It goes through the arm, first in the posterior compartment of the arm, and later in the anterior compartment of the arm, and continues in the posterior compartment of the forearm.
https://en.wikipedia.org/wiki/Radial_nerve
radial nerve. n. A nerve that arises from the posterior cord of the brachial plexus and divides into two terminal branches, designated superficial and deep, that supply muscular and cutaneous branches to the dorsal aspect of the arm and forearm.
http://medical-dictionary.thefreedictionary.com/radial+nerve
The radial nerve is also responsible for extending the wrist and fingers, and it controls sensation in part of the hand. Injury to the radial nerve may result in radial neuropathy, or radial nerve palsy.
http://www.healthline.com/health/radial-nerve-dysfunction
1 The superficial branch of the radial nerve descends in the forearm under the brachioradialis. 2  It crosses brachioradialis to enter posterior of forearm near the back of the wrist and supply dorsum of hand.
https://en.wikipedia.org/wiki/Radial_nerve
Symptoms of an Injury to the Radial Nerve. Injury to the radial nerve usually causes symptoms in the back of the hand, near the thumb, and in the index and middle fingers. Symptoms may include: 1  sharp or burning pain. 2  numbness or tingling. 3  trouble straightening the arm.
http://www.healthline.com/health/radial-nerve-dysfunction
The radial nerve is most commonly injured by fractures of the middle third of the humerus, resulting in a loss of extension at the wrist (wrist drop).
http://medical-dictionary.thefreedictionary.com/radial+nerve
Appointments & care. At Mayo Clinic, we take the time to listen, to find answers and to provide you the best care. Your peripheral nerves link your brain and spinal cord to the other parts of your body, such as your muscles and skin. Peripheral nerves are fragile and easily damaged. A nerve injury can interfere with your brain's ability to communicate with your muscles and organs. If you feel tingling or numbness in your leg, arm, shoulder or hand, you may have injured one or more nerves when you had an accident or broke a bone. You may also experience numbness or tingling if a nerve is being compressed due to factors such as a narrow passageway, tumor or other diseases.
http://www.mayoclinic.org/diseases-conditions/peripheral-nerve-injuries/basics/definition/CON-20036130
The branches of the radial nerve are the medial muscular branches, the posterior brachial cutaneous nerve, the posterior muscular branches, the posterior antebrachial cutaneous nerve, the lateral muscular branches, the superficial branch, and the deep branch. Also called musculospiral nerve.
http://medical-dictionary.thefreedictionary.com/radial+nerve
radial nerve definition
Radial nerve is defined as a nerve that arises from the posterior cord of the brachial plexus and divides into two terminal branches, designated superficial and deep, that supply muscular and cutaneous branches to the dorsal aspect of the arm and forearm. The radial nerve is a nerve that arises from the posterior cord of the brachial plexus and divides into two terminal branches, designated superficial and deep, that supply muscular and cutaneous branches to the dorsal aspect of the arm and forearm.