Longissimus Anatomy Origin Insertion Action Youtube Longissimus is the longest, thickest and most central erector spinae muscle. it is divided into three parts (capitis, cervicis, thoracis) based on their superior attachments and location. the erector spinae muscles, including longissimus, are the most powerful extensors of the vertebral column. hence their main actions include spine extension. It attaches to the lower ribs, the transverse processes of c2 – t12, and the mastoid process of the skull. actions: acts unilaterally to laterally flex the vertebral column. acts bilaterally to extend the vertebral column and head. innervation: posterior rami of the spinal nerves. longissimus thoracic receives blood supply from the dorsal.
Longissimus Origin Insertion Youtube What is the longissimus muscle. the longissimus is a deep intrinsic muscle of the back that runs along the sides of the spine, extending from the neck to the lower back. it plays a crucial role in spine and head movements. in latin, the muscle’s name means “the longest one,” as it is the thickest and longest of the three erector spinae. ⭐ longissimus muscle anatomy ⭐the longissimus muscle has three sections: the longissimus thoracis, longissimus cervicis, and longissimus capitis. it is also. The longissimus muscle is one of the three groups of muscles which make up the erector spinae lying either side of the spinous processes of the vertebral column, and forming the largest group of intrinsic back muscles. the iliocostalis is the outermost erector spinae muscle, the longissimus lies in the middle, and the spinalis lies most. Longissimus is the longest and thickest muscle of the erector spinae and lies between spinalis and iliocostalis [1]. longissimus, together with the rest of the erector spinae group, runs along the entire length of the vertebral column [1].it is made of three parts listed below [1] [2]: longissimus capitis. longissimus cervicis.
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