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Body Atlas, Muscle Reference

Muscles

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

342 muscles

342 muscles

Muscle Extensor Indicis (Full) musculus extensor indicis Forearm The extensor indicis provides the independent index finger extension needed for pointing while the other digits… Muscle Extensor Pollicis Brevis musculus extensor pollicis brevis Forearm The extensor pollicis brevis travels through the first extensor compartment alongside the abductor pollicis longus, forming… Muscle Extensor Pollicis Brevis musculus extensor pollicis brevis Forearm The EPB is the second tendon of the first extensor compartment alongside the APL, sharing the… Muscle Extensor Pollicis Longus musculus extensor pollicis longus Forearm The extensor pollicis longus runs obliquely through the third extensor compartment around Lister tubercle on the… Muscle External Anal Sphincter musculus sphincter ani externus Pelvis & Hip The external anal sphincter is the voluntary striated muscle sphincter surrounding the anal canal, providing the… Muscle External Oblique musculus obliquus externus abdominis Abdomen The external oblique is the largest and most superficial of the flat abdominal muscles, with fibres… Muscle External Oblique (Full) musculus obliquus externus abdominis Abdomen The external oblique is the largest and most superficial lateral abdominal muscle. Its fibres run inferomedially… Muscle External Urethral Sphincter musculus sphincter urethrae externus Pelvis & Hip The external urethral sphincter provides the voluntary conscious control of urination, encircling the membranous urethra as… Muscle First Dorsal Interosseous (Full) musculus interosseus dorsalis primus manus Hand & Wrist The first dorsal interosseous is the largest interosseous muscle, forming the visible bulk of the first… Muscle Flexor Carpi Radialis musculus flexor carpi radialis Forearm The FCR is the radial wrist flexor, running in its own fibro-osseous tunnel over the scaphoid… Muscle Flexor Carpi Radialis musculus flexor carpi radialis Forearm The flexor carpi radialis runs from the medial epicondyle to the base of the index finger… Muscle Flexor Carpi Radialis (Full) musculus flexor carpi radialis Forearm The FCR is the primary radial wrist flexor, inserting on the second metacarpal base. Its tendon… Muscle Flexor Carpi Ulnaris musculus flexor carpi ulnaris Forearm The FCU is the ulnar wrist flexor and the most powerful wrist deviator toward the ulnar… 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 Digiti Minimi Brevis musculus flexor digiti minimi brevis manus Hand & Wrist The flexor digiti minimi brevis is the central hypothenar muscle, flexing the little finger at the… Muscle Flexor Digiti Minimi Brevis (Foot) musculus flexor digiti minimi brevis pedis Foot & Ankle The flexor digiti minimi brevis of the foot flexes the little toe at the MTP joint… Muscle Flexor Digiti Minimi Brevis (Hand) musculus flexor digiti minimi brevis manus Hand & Wrist The FDMB forms the central hypothenar muscle, flexing the little finger MCP joint. With the ADM… Muscle Flexor Digitorum Brevis musculus flexor digitorum brevis Foot & Ankle The flexor digitorum brevis is the foot equivalent of the flexor digitorum superficialis in the hand,… Muscle Flexor Digitorum Longus musculus flexor digitorum longus Lower Leg The flexor digitorum longus runs down the posterior tibia, passes medial to the medial malleolus with… 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 Superficialis musculus flexor digitorum superficialis Forearm The FDS is the superficial long finger flexor producing PIP joint flexion. It can be tested… 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 Hallucis Brevis musculus flexor hallucis brevis Foot & Ankle The flexor hallucis brevis arises from the midfoot and divides into medial and lateral heads that… Muscle Flexor Hallucis Longus musculus flexor hallucis longus Lower Leg The flexor hallucis longus is the most powerful of the long toe flexors, originating from the…

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