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Body Atlas, Muscle Reference

Muscles

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

676 muscles

676 muscles

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 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 Brevis Detail musculus flexor hallucis brevis detail Foot & Ankle FHB straddles the hallux MTP joint via its two heads with sesamoid insertions. The sesamoids form… Muscle Flexor Hallucis Brevis Lateral Head caput laterale m. flexoris hallucis brevis Foot & Ankle The lateral head of FHB inserts via the lateral sesamoid and receives innervation from the lateral… Muscle Flexor Hallucis Brevis Medial Head caput mediale m. flexoris hallucis brevis Hand & Wrist The medial head of FHB inserts via the medial sesamoid and is primarily responsible for the… 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… Muscle Flexor Hallucis Longus Detail musculus flexor hallucis longus detail Lower Leg FHL is the most powerful toe flexor, contributing approximately 20% of total ankle plantarflexion force. Its… Muscle Flexor Pollicis Brevis musculus flexor pollicis brevis Hand & Wrist The flexor pollicis brevis has the unusual distinction of dual innervation, with the superficial head supplied… Muscle Flexor Pollicis Brevis Deep Head caput profundum m. flexoris pollicis brevis Hand & Wrist The deep head is ulnar-innervated (unlike the superficial head which is median), making FPB the only… Muscle Flexor Pollicis Brevis Superficial Head caput superficiale m. flexoris pollicis brevis Hand & Wrist The superficial head is the median-innervated component inserting on the radial sesamoid. It is the primary… 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 Fourth Dorsal Interosseous of the Foot musculus interosseus dorsalis quartus pedis Foot & Ankle The fourth dorsal interosseous is the most laterally placed of the dorsal interossei, occupying the fourth… Muscle Fourth Dorsal Interosseous of the Foot Detail musculus interosseus dorsalis quartus pedis detail Foot & Ankle The fourth dorsal interosseous is the most lateral of the dorsal interossei. It abducts the fourth… Muscle Fourth Dorsal Interosseous of the Hand musculus interosseus dorsalis quartus manus Hand & Wrist The fourth dorsal interosseous is the most ulnar of the dorsal interossei, abducting the ring finger… Muscle Fourth Lumbrical Detail (Hand) musculus lumbricalis quartus manus detail Hand & Wrist The fourth lumbrical is the most ulnar and is ulnar-nerve innervated. Its origin from two FDP… Muscle Fourth Lumbrical of the Foot musculus lumbricalis quartus pedis Foot & Ankle The fourth lumbrical is the most laterally placed foot lumbrical, controlling the fifth toe MTP joint… Muscle Fourth Lumbrical of the Hand musculus lumbricalis quartus manus Hand & Wrist The fourth lumbrical is bipennate, the most ulnar of the four hand lumbricals, and is exclusively…

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