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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 Second Dorsal Interosseous of the Foot Detail musculus interosseus dorsalis secundus pedis detail Foot & Ankle The second dorsal interosseous abducts the second toe laterally. The dorsal interossei abduct toes 2, 3,… Muscle Second Dorsal Interosseous of the Hand musculus interosseus dorsalis secundus manus Hand & Wrist The second dorsal interosseous (DAB: Dorsal ABducts) abducts the middle finger toward the index finger axis,… Muscle Second Lumbrical of the Foot musculus lumbricalis secundus pedis Foot & Ankle The second lumbrical is bipennate, arising from adjacent FDL tendon slips. It is innervated by the… Muscle Second Lumbrical of the Hand musculus lumbricalis secundus manus Hand & Wrist The second lumbrical is unipennate from the second FDP tendon and is the second median-nerve lumbrical.… Muscle Second Palmar Interosseous of the Hand musculus interosseus palmaris secundus manus Hand & Wrist The second palmar interosseous (PAD: Palmar ADducts) adducts the ring finger toward the axis of the… Muscle Second Plantar Interosseous Detail musculus interosseus plantaris secundus detail Foot & Ankle The second plantar interosseous adducts the fourth toe toward the axis of the foot (third toe… Muscle Second Plantar Interosseous of the Foot musculus interosseus plantaris secundus pedis Foot & Ankle The second plantar interosseous adducts the fourth toe toward the midline, occupying the space plantar to… Muscle Semimembranosus musculus semimembranosus Thigh The semimembranosus is the deepest and most medial hamstring, named for the broad flat membranous tendon… Muscle Semimembranosus Detail musculus semimembranosus detail Thigh The semimembranosus has five distinct insertional expansions, including the oblique popliteal ligament which reinforces the posterior… Muscle Semispinalis Capitis musculus semispinalis capitis Neck The semispinalis capitis is the largest of the deep cervical muscles, forming a thick cylindrical mass… Muscle Semispinalis Capitis (Full) musculus semispinalis capitis Head & Skull The semispinalis capitis is the largest and most superficial posterior cervical muscle, forming the bulk of… Muscle Semispinalis Cervicis musculus semispinalis cervicis Neck The semispinalis cervicis is the cervical component of the transversospinalis group, bridging from the upper thoracic… Muscle Semispinalis Cervicis Detail musculus semispinalis cervicis detail Neck Semispinalis cervicis is the largest cervical extensor, spanning from the upper thoracic transverse processes to the… Muscle Semispinalis Thoracis musculus semispinalis thoracis Chest The semispinalis thoracis spans five or more vertebral levels from the mid-thoracic transverse processes to the… Muscle Semispinalis Thoracis Detail musculus semispinalis thoracis detail Chest Semispinalis thoracis spans the greatest number of vertebral levels of all the semispinalis components, bridging from… Muscle Semitendinosus musculus semitendinosus Thigh The semitendinosus is the most medial of the three hamstring muscles and has the longest tendon… Muscle Semitendinosus Detail musculus semitendinosus detail Thigh The semitendinosus has an exceptionally long thin tendon (relative to its belly) making it ideal for… Muscle Serratus Anterior musculus serratus anterior Chest The serratus anterior is a broad, saw-toothed muscle wrapping around the lateral chest wall and connecting… Muscle Serratus Anterior (Full) musculus serratus anterior Chest Serratus anterior is the key muscle holding the scapula against the thorax and rotating it upward… Muscle Serratus Anterior Detail musculus serratus anterior detail Chest The serratus anterior is the most important scapular stabiliser, holding the medial border of the scapula… Muscle Serratus Anterior Lower Slips musculus serratus anterior (fasciculi inferiores) Shoulder The lower digitations of serratus anterior, arising from ribs 5-9, are the most powerful portion of… Muscle Serratus Anterior Lower Slips Detail musculus serratus anterior slips inferiores detail Shoulder The lower slips of serratus anterior are the most functionally important component — their pull on… Muscle Serratus Anterior Middle Slips musculus serratus anterior slips medii Shoulder The middle slips of serratus anterior connect the middle medial scapular border to the chest wall,… Muscle Serratus Anterior Upper Slips musculus serratus anterior (slips superiores) Shoulder The upper slips of serratus anterior, arising from ribs 1-6, are the portion that contributes to…

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