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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 Interspinales Cervicis musculi interspinales cervicis Neck The cervical interspinales are thin paired muscles between adjacent cervical spinous processes, providing segmental extension stabilisation.… Muscle Interspinales Lumborum musculi interspinales lumborum Lower Back The interspinales lumborum are the smallest and most medial of the deep back muscles, consisting of… Muscle Interspinales Thoracis musculi interspinales thoracis Chest The thoracic interspinales are poorly developed and often absent, reflecting the rib cage stability at this… Muscle Interspinalis Thoracis musculus interspinalis thoracis Chest The interspinalis thoracis muscles are small, paired muscle slips connecting adjacent thoracic spinous processes. They are… Muscle Intertransversarii musculi intertransversarii Lower Back The intertransversarii connect adjacent transverse processes throughout the cervical and lumbar spine, acting as intersegmental lateral… Muscle Intertransversarii (Lumbar) musculi intertransversarii lumborum Lower Back The lumbar intertransversarii connect adjacent lumbar transverse processes and, like the rotatores, are thought to serve… Muscle Intertransversarii Cervicis Anterior musculi intertransversarii anteriores cervicis Neck Unique among deep back muscles in receiving ventral rami innervation, making them homologous to quadratus lumborum.… Muscle Intertransversarii Cervicis Posterior musculi intertransversarii posteriores cervicis Neck The posterior cervical intertransversarii connect adjacent posterior tubercles and contribute to lateral cervical stabilisation and facet… Muscle Intertransversarii Laterales Lumborum musculi intertransversarii laterales lumborum Lower Back The intertransversarii laterales lumborum connect adjacent transverse processes on their anterior surfaces and are innervated by… Muscle Intertransversarii Muscles musculi intertransversarii Lower Back The intertransversarii are small paired muscles connecting adjacent transverse processes throughout the vertebral column. The cervical… Muscle Ischiocavernosus musculus ischiocavernosus Pelvis & Hip The ischiocavernosus muscle covers the crus of the erectile tissue and compresses it during erection, preventing… Muscle Ischiocavernosus (Full) musculus ischiocavernosus Pelvis & Hip The ischiocavernosus covers the crus of the penis or clitoris, compressing it to maintain erection by… Muscle Ischiocavernosus Detail musculus ischiocavernosus detail Pelvis & Hip The ischiocavernosus encircles the crus of the penis or clitoris, compressing the deep dorsal vein to… Muscle Ischiococcygeus Detail musculus ischiococcygeus (coccygeus) detail Pelvis & Hip Ischiococcygeus is another name for the coccygeus muscle, used when emphasising its ischial spine to coccyx… Muscle Ischiourethralis musculus ischiourethralis Pelvis & Hip The ischiourethralis is considered the male counterpart of the female compressor urethrae, originating from the ischial… Muscle Lateral Cricoarytenoid musculus cricoarytenoideus lateralis Neck The lateral cricoarytenoid is the primary vocal cord adductor, rotating the arytenoid cartilage to bring the… Muscle Lateral Cricoarytenoid Detail musculus cricoarytenoideus lateralis detail Head & Skull The lateral cricoarytenoid is the primary adductor of the vocal fold, bringing the arytenoid cartilages together… Muscle Lateral Head of Triceps caput laterale musculi tricipitis brachii Upper Arm The lateral head of triceps is the most superficial and lateral portion of the triceps, forming… Muscle Lateral Head of Triceps Detail caput laterale m. tricipitis brachii detail Upper Arm The lateral head is the most prominent and superficially visible triceps component. Its origin above the… Muscle Lateral Pterygoid musculus pterygoideus lateralis Head & Skull The lateral pterygoid is the only masticatory muscle that actively opens the jaw, working with the… Muscle Lateral Pterygoid Inferior Head caput inferius m. pterygoidei lateralis Head & Skull The inferior head of the lateral pterygoid is unique in being active during mouth opening rather… Muscle Lateral Pterygoid Superior Head caput superius musculi pterygoidei lateralis Head & Skull The lateral pterygoid muscle has two distinct heads with different functions: the inferior head protrudes and… Muscle Lateral Rectus (Eye) musculus rectus lateralis oculi Head & Skull The lateral rectus is the only extra-ocular muscle supplied by the abducens nerve (CN VI), making… Muscle Latissimus Dorsi musculus latissimus dorsi Chest The latissimus dorsi is the broadest muscle in the human body, spanning from the lower back…

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