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Body Atlas, Muscle Reference

Muscles

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

32 muscles

32 muscles in Lower Back Clear ×

Muscle Erector Spinae musculus erector spinae Lower Back The erector spinae is not a single muscle but a column of three parallel muscle groups,… Muscle Erector Spinae (Group) musculi erectores spinae Lower Back The erector spinae is the primary extensor muscle mass of the spine, consisting of three longitudinal… Muscle Iliocostalis musculus iliocostalis Lower Back The iliocostalis is the most lateral column of the erector spinae group, spanning the full length… Muscle Iliocostalis (Full) musculus iliocostalis (pars erectoris spinae) Lower Back The iliocostalis is the most lateral column of the erector spinae, running from the iliac crest… Muscle Iliocostalis Cervicis Detail musculus iliocostalis cervicis detail Lower Back Iliocostalis cervicis is the highest component of the iliocostalis column, bridging the upper ribs to the… Muscle Iliocostalis Lumborum musculus iliocostalis lumborum Lower Back The iliocostalis lumborum is the lumbar portion of the iliocostalis, forming the most lateral column of… Muscle Iliocostalis Lumborum Detail musculus iliocostalis lumborum detail Lower Back Iliocostalis lumborum is the lateral column of the lumbar erector spinae, providing the primary lateral lumbar… Muscle Interspinales (Lumbar) musculi interspinales lumborum Lower Back The lumbar interspinales are paired small muscles flanking the interspinous ligament between adjacent spinous processes. They… 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 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 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 Levatores Costarum musculi levatores costarum Lower Back The levatores costarum are twelve pairs of small fan-shaped muscles on each side of the thoracic… Muscle Longissimus musculus longissimus Lower Back The longissimus is the largest and most central column of the erector spinae, spanning the full… Muscle Longissimus (Full) musculus longissimus (pars erectoris spinae) Lower Back The longissimus is the intermediate and longest column of the erector spinae, running from the common… Muscle Longissimus Thoracis Detail musculus longissimus thoracis detail Lower Back Longissimus thoracis is the largest muscle in the body by length, spanning from the pelvis to… Muscle Multifidus musculus multifidus Lower Back The multifidus is the most important deep stabilising muscle of the spine, spanning 2 to 4… Muscle Multifidus (Full) musculus multifidus Lower Back The multifidus is the most important lumbar spinal stabiliser, providing segmental control through its short multi-segment… Muscle Multifidus (Lumbar) musculus multifidus lumborum Lower Back The lumbar multifidus is the most important lumbar stabiliser, providing segmental control of each vertebral motion… Muscle Multifidus Lumbar Detail musculus multifidus lumborum detail Lower Back The lumbar multifidus is the single most important stabilising muscle of the lumbar spine. Its deep… Muscle Psoas Major musculus psoas major Lower Back The psoas major is the primary hip flexor for everyday activities such as walking and stair… Muscle Psoas Major (Full) musculus psoas major Lower Back The psoas major is the only muscle connecting the lumbar spine to the lower limb, running… Muscle Psoas Minor musculus psoas minor Lower Back The psoas minor is a vestigial muscle present in only approximately 60 percent of people, a…