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Awned muscle
Last reviewed: 23.04.2024
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The spinal muscle (m. Spinalis) is the most medial of the three parts of the muscle that straightens the spine. The muscle is directly attached to the spinous processes of the thoracic and cervical vertebrae. This muscle is excreted by the spinous muscle of the breast, the spinous neck muscle and the spinous muscle of the head.
The spinal musculoskeletal (m. Spinalis thoracis) begins with three or four tendons on the spinous processes of II and I lumbar, XII and XI thoracic vertebrae; is attached to the spinous processes of the upper eight thoracic vertebrae. The muscle is fused to the deep-lying semimart muscle of the breast.
The spinous neck muscle (m. Spinalis cervicis) begins on the spinous processes of the first and second thoracic, VII cervical vertebrae and the lower part of the nuchal ligament. The muscle is attached to the spinous process of the II cervical vertebra (sometimes to III-IV).
The spinalis capitis of the head begins with thin bundles on the spinous processes of the upper thoracic and lower cervical vertebrae, rises and attaches to the occipital bone near the external occipital protrusion. This muscle is often absent.
Function: unbends the spine.
Innervation: posterior branches of cervical, thoracic and upper lumbar spinal nerves (CIII-LII).
Blood supply: posterior intercostal arteries, deep cervical artery.
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