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Transverse-awned muscle
Last reviewed: 19.11.2021
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The transverse-awned muscle (m. Transversospinalis) is represented by a set of layered muscular bundles that run obliquely upward from the lateral in the medial direction from the transverse processes to the spinous processes of the vertebrae. The muscle bundles of the transverse-awned muscle are of unequal length and, spreading through a different number of vertebrae, form separate muscles: semisolid, multi-parted and rotator muscles.
Each of these muscles, in turn, is divided into separate muscles, named at the location on the dorsal side of the trunk, neck and occipital region of the head. In this sequence, individual parts of the transverse-awned muscle are examined.
Semi-oval muscles (m. Semispinals) have the form of long muscular bundles, it begins on the transverse processes of the underlying vertebrae, spills across 4-6 vertebrae and attaches to the spinous processes of the overlying vertebrae. This muscle is excreted by the semi-oval muscles of the chest, neck and head.
The semi-vascular muscle of the breast (m. Semispinalis thoracis) begins on the transverse processes of the six lower thoracic vertebrae and attaches to the spinous processes of the four upper pectoral and two lower cervical vertebrae.
The semi-vascular muscle of the neck (m. Semispinalis cervicis) originates from the transverse processes of the six upper thoracic vertebrae and articular processes of the four lower cervical vertebrae. The muscle is attached to the spinous processes of the V-II cervical vertebrae.
Semiarticular muscle of the head (m. Semispinalis capitis) broad, thick, begins on the transverse processes of the six upper pectoral and articular processes of the four lower cervical vertebrae (outside of the long muscles of the head and neck). The muscle is attached to the occipital bone between the upper and lower vaginal lines. The muscle behind is covered with a belt and the longest muscle of the head. Deeper and anterior to the semi-venous muscle of the head lies the semi-oval muscle of the neck.
Function: Semiarticular muscles of the chest and neck extend the thoracic and cervical spine, with one-sided cutting turn these parts of the spine in the opposite direction. The semi-vascular muscle of the head tilts the head back, turning (with one-sided contraction) the person in the opposite direction.
Innervation: posterior branches of cervical and thoracic spinal nerves (CIII-ThxII).
Blood supply: posterior intercostal arteries, deep cervical artery.
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