Semispinalis dorsi
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| Semispinalis dorsi | ||
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| Deep muscles of the back. (Semispinalis dorsi visible at center left.) | ||
| Latin | musculus semispinalis thoracis, musculus semispinalis dorsi | |
| Gray's | subject #115 400 | |
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| Dorlands/Elsevier | m_22/12550719 | |
The Semispinalis dorsi (or semispinalis thoracis) consists of thin, narrow, fleshy fasciculi, interposed between tendons of considerable length.
It arises by a series of small tendons from the transverse processes of the sixth to the tenth thoracic vertebræ, and is inserted, by tendons, into the spinous processes of the upper four thoracic and lower two cervical vertebrae.
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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
BACK: splenius: (capitis - cervicis) - erector spinae (iliocostalis - longissimus - spinalis) - latissimus dorsi
transversospinales: (semispinalis dorsi - semispinalis cervicis - semispinalis capitis - multifidus - rotatores) - interspinales - intertransversarii
SUBOCCIPITAL: rectus capitis posterior (major, minor) - obliquus capitis (inferior, superior)
CHEST: intercostales (external, internal, innermost) - subcostales - transversus thoracis - levatores costarum - serratus posterior (inferior, superior) - diaphragm
ABDOMEN: obliques (external, internal) - transversus abdominis - rectus abdominis - pyramidalis - cremaster - quadratus lumborum
PELVIS: levator ani (iliococcygeus, pubococcygeus, puborectalis) - coccygeus
PERINEUM: sphincter ani (externus, internus) - superficial perineal pouch (transversus perinei superficialis - bulbospongiosus - ischiocavernosus) - deep perineal pouch (transversus perinei profundus, sphincter urethrae membranaceae)
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