Ulnar Nerve

In human anatomy, the ulnar nerve is a nerve which runs near the ulna bone. The ulnar collateral ligament of elbow joint is in relation with the ulnar nerve. The nerve is the largest unprotected nerve in the human body (meaning unprotected by muscle or bone), so injury is common. This nerve is directly connected to the little finger, and the adjacent half of the ring finger, supplying the palmar side of these fingers, including both front and back of the tips, perhaps as far back as the fingernail beds.

One method of injuring the nerve is to strike the medial epicondyle of the humerus from posteriorly, or inferiorly with the elbow flexed. The ulnar nerve is trapped between the bone and the overlying skin at this point. This is commonly referred to as bumping one's "funny bone". This name is thought to be a pun, based on the sound resemblance between the name of the bone of the upper arm, the "humerus" and the word "humorous". Alternatively, according to the Oxford English Dictionary it may refer to "the peculiar sensation experienced when it is struck".

Read more about Ulnar NerveArm, Forearm, Hand, Ulnar Nerve Entrapment

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

Ulnar Nerve Entrapment
... The ulnar nerve can be trapped or pinched as it proceeds from the brachial plexus to the fingertips ... In this syndrome, a tunnel on the medial side of the elbow traps the nerve ... Pinching of the ulnar nerve often causes paraesthesiae (tingling) in the fourth and fifth digits ...
Dorsal Digital Nerves Of Ulnar Nerve
... Dorsal digital nerves of ulnar nerve are branches on the dorsum of the hand ... The dorsal branch of the ulnar nerve divides into two dorsal digital branches one supplies the ulnar side of the little finger the other, the adjacent sides of the little ... a twig to join that given by the superficial branch of the radial nerve for the adjoining sides of the middle and ring fingers, and assists in supplying them ...
Proper Palmar Digital Nerves Of Ulnar Nerve
... The proper palmar digital nerves of ulnar nerve are nerves of the hand ... The superficial branch of the ulnar nerve divides into a proper palmar digital nerve which supplies the medial side of the fifth digit and a common palmar digital nerve which divides into two proper palmar ...
Common Palmar Digital Nerves Of Ulnar Nerve
... The common palmar digital nerves of the ulnar nerve are nerves of the hand ... The nerve branches off of the superficial branch of the ulnar nerve and runs toward the cleft between the ring and pinky fingers ...

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