The muscular branches of ulnar nerve are a variety of branches of the

ulnar nerve The ulnar nerve is a nerve that runs near the ulna, one of the two long bones in the forearm. The ulnar collateral ligament of elbow joint is in relation with the ulnar nerve. The nerve is the largest in the human body unprotected by muscle or ...

. One supplies the

flexor carpi ulnaris muscle The flexor carpi ulnaris (FCU) is a skeletal muscle, muscle of the forearm that flexion, flexes and Adduction, adducts at the wrist joint. Structure Origin The flexor carpi ulnaris has two heads; a humeral head and ulnar head. The humeral head o ...

(a superficial muscle of the

anterior compartment of the forearm The anterior compartment of the forearm (or flexor compartment) contains the following muscles: The muscles are largely involved with flexion and supination. The superficial muscles have their origin on the common flexor tendon. The ulnar nerve ...

), while the other supplies the ulnar half of the

flexor digitorum profundus muscle The flexor digitorum profundus or flexor digitorum communis profundus is a muscle in the forearm of humans that flexes the fingers (also known as digits). It is considered an extrinsic hand muscle because it acts on the hand while its muscle b ...

(a deep muscle of the anterior compartment of the forearm).

Structure

The muscular branches of the ulnar nerve arise at the elbow. Multiple branches may supply each muscle.

Variation

The branching pattern of the muscular branches of the ulnar nerve varies significantly.

Function

The muscular branches of the

supply two flexor muscles of the

: *

, a superficial muscle. * the ulnar / medial half of the

, a deep muscle.

References

{{Anatomy-stub Nerves of the upper limb