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Body Atlas, Muscle Reference

Muscles

Complete muscle reference, origins, insertions, nerve supply, actions, clinical notes, and common injuries.

49 muscles

49 muscles in Forearm Clear ×

Muscle Flexor Carpi Radialis Detail musculus flexor carpi radialis detail Forearm The FCR runs in its own compartment at the wrist — a fibro-osseous tunnel between the… Muscle Flexor Carpi Ulnaris musculus flexor carpi ulnaris Forearm The flexor carpi ulnaris is the most medial superficial forearm flexor and the only forearm flexor… Muscle Flexor Carpi Ulnaris Detail musculus flexor carpi ulnaris detail Forearm The FCU is the only wrist flexor innervated by the ulnar nerve. The ulnar nerve passes… Muscle Flexor Digitorum Profundus musculus flexor digitorum profundus Forearm The flexor digitorum profundus is the deep finger flexor that alone controls distal phalanx flexion, passing… Muscle Flexor Digitorum Profundus Detail musculus flexor digitorum profundus detail Forearm FDP is the only flexor of the DIP joint and is uniquely innervated by two different… Muscle Flexor Digitorum Superficialis musculus flexor digitorum superficialis Forearm The flexor digitorum superficialis is the superficial digital flexor of the forearm, inserting on the middle… Muscle Flexor Digitorum Superficialis Humeral Head caput humerale m. flexoris digitorum superficialis Forearm The humero-ulnar head arises from the medial epicondyle and coronoid and is the dominant head in… Muscle Flexor Digitorum Superficialis Index Slip musculus flexor digitorum superficialis — fasciculus indicis Forearm The index finger slip of FDS is the most independently controllable of the four FDS slips,… Muscle Flexor Digitorum Superficialis Little Slip musculus flexor digitorum superficialis — fasciculus digiti minimi Forearm The little finger FDS slip is the most variable of the four slips — it is… Muscle Flexor Digitorum Superficialis Middle Slip musculus flexor digitorum superficialis — fasciculus medii Forearm The middle finger FDS slip shares the radial head origin with the index slip, receiving AIN… Muscle Flexor Digitorum Superficialis Radial Head caput radiale m. flexoris digitorum superficialis Forearm The radial head of FDS arises from the anterior radius and supplies the index and middle… Muscle Flexor Digitorum Superficialis Ring Slip musculus flexor digitorum superficialis — fasciculus annularis Forearm The ring finger FDS slip arises primarily from the humeral-ulnar head origin at the medial epicondyle.… Muscle Flexor Pollicis Longus musculus flexor pollicis longus Forearm The flexor pollicis longus is the only long flexor of the thumb, supplying the powerful pinch… Muscle Flexor Pollicis Longus (Full) musculus flexor pollicis longus Forearm The FPL is the only flexor of the thumb IP joint, providing the grip force for… Muscle Flexor Pollicis Longus Detail musculus flexor pollicis longus detail Forearm FPL is the only flexor of the thumb interphalangeal joint. Its AIN innervation makes it the… Muscle Palmaris Longus musculus palmaris longus Forearm The palmaris longus is a slender, inconstant forearm muscle absent in roughly 14 percent of people… Muscle Palmaris Longus Detail musculus palmaris longus detail Forearm Palmaris longus is absent in 14% of individuals. It has the longest tendon of any forearm… Muscle Pronator Quadratus musculus pronator quadratus Forearm The pronator quadratus is a flat, square muscle binding the distal radius and ulna together, acting… Muscle Pronator Quadratus Deep Layer stratum profundum musculi pronatoris quadrati Forearm The deep head provides DRUJ compression — a function analogous to the rotator cuff at the… Muscle Pronator Teres musculus pronator teres Forearm The pronator teres is the primary pronator of the forearm, a two-headed muscle whose humeral and… Muscle Pronator Teres (Full) musculus pronator teres Forearm The pronator teres is the primary forearm pronator, inserting on the lateral radius to rotate it… Muscle Pronator Teres Humeral Head caput humerale m. pronatoris teretis Forearm The humeral head is the large component arising from the medial epicondyle. The median nerve passes… Muscle Pronator Teres Ulnar Head caput ulnare m. pronatoris teretis Forearm The ulnar head arises from the coronoid and forms the deep boundary of the inter-head interval… Muscle Supinator musculus supinator Forearm The supinator wraps around the proximal radius and is the primary supinator of the forearm, most…