What is spinalis?

spinalis is the muscles included in the group of the Erektor Spinae muscle group in the human back. Erector Spinae, formerly known as Satrospinalis, consists of three separate muscles and their tendons: Spinalis, Longissimus and IlioCostalis. These muscles are located directly along the spine and act to expand the vertebral column. Spinalis, which can be divided into three cuts, also acts on lateral bending or bend to the side, head and neck. or closest to the spine. IlioCostalis segments reach from the cross bone, just above the tail bone, to the thoracic basket and include Iliocostalis lumborum, Iliocostalis dorsi and Iliocostalis cervicis. Slightly higher are those of Longissimus - Longissimus Toracis, Longissimus cervicis and Longissimus Capitis - which stretches from the lumbar spine to the base of the head, making it the longest of the three muscles.

spinalis is the innermost and the highest of three and consists of three segmeNts that stretch from the two best lumbar turnover to the second cervical vertebra: spinalis dorsi, spinalis cervicis and spinalis chapter. Like the other Spinae muscles with Spinae, they are arranged in bundles of muscle fibers and tendons that attach to each of the vertebrae it includes. Spinalis Dorsi fibers, which are merged with Longissimus dorsi fibers along it, come on the two best lumbar vertebrae, L1 and L2 and on the lower two thoracic vertebrae, T11 and T12. His tendons are attached to these turnover along their spin processes, retroactory-projection bony protrusions of the spine, which can be seen and felt in the middle of the back. From there, Spinalis dorsi is inserted over more tendons along the upper thoracic vertebrae.

emerging just above Spinalis dorsi is a spinalis cervicis, whose fibers come from the spinious C7 process, the bottom -fashioned cervical vertebra. It also often occurs from T1 and T2, the highest thoracic vertebrae. He then puts on the upper part of the cervical spine on the spinus process C2, also knowsmine as an axis and occasionally along C3 and C4. The insertion close is the smallest of the spinalis segments, spinalis capitis, which runs medially and mixes with the fibers semispinalis capitis, attaching to the occipital bone on the skull base.

Since it is so intimately connected with the spine, spinalis works to move vertebrae and work differently depending on whether one or both sides are withdrawing. When the muscle contracts uniforms or on both sides, it extends the entire backbone column, as when straightening upwards from the position forward. Single contractions of the muscle, which occur specifically along its upper segments, create lateral flexion of the head and neck, as in loading the ear towards the shoulder.