The erector spinae

The Erector Spinae The erector spinae is not just one muscle, but a bundle of muscles and tendons: Iliocostalis lumborum, Iliocostalis thoracis, Iliocostalis cervicis, Longissimus thoracis, Longissimus cervicis, Longissimus capitis, Spinalis thoracis, Spinalis cervicis, and Spinalis capitis. Paired, they run more or less vertically. It extends throughout the lumbar, thoracic and cervical regions, and lies in the groove to the …

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