Intertransversarii muscle
Intertransversarii muscles
Latin	musculi intertransversarii
Gray's	subject #115 401
Origin	Transverse process
Insertion	Transverse process above
Artery
Nerve	Anterior rami of spinal nerves
Actions	Lateral flexion of trunk

The Intertransversarii are small muscles placed between the transverse processes of the vertebræ.

Contents 1 Divisions 1.1 Cervical 1.2 Thoracic 1.3 Lumbar 2 Innervation 3 References 4 External links

[edit] Divisions

[edit] Cervical

In the cervical region they are best developed, consisting of rounded muscular and tendinous fasciculi, and are placed in pairs, passing between the anterior and the posterior tubercles respectively of the transverse processes of two contiguous vertebræ, and separated from one another by an anterior primary division of the cervical nerve, which lies in the groove between them.

• The muscles connecting the anterior tubercles are termed the Intertransversarii anteriores.
• Those between the posterior tubercles are termed the Intertransversarii posteriores.

Both sets are supplied by the anterior divisions of the spinal nerves.

There are seven pairs of these muscles, the first pair being between the atlas and axis, and the last pair between the seventh cervical and first thoracic vertebræ.

[edit] Thoracic

In the thoracic region they are present between the transverse processes of the lower three thoracic vertebræ, and between the transverse processes of the last thoracic and the first lumbar.

[edit] Lumbar

In the lumbar region they are arranged in pairs, on either side of the vertebral column,

• one set occupying the entire interspace between the transverse processes of the lumbar vertebræ, the Intertransversarii laterales.
• the other set, Intertransversarii mediales, passing from the accessory process of one vertebra to the mammillary of the vertebra below.

The Intertransversarii laterales are supplied by the anterior divisions, and the Intertransversarii mediales by the posterior divisions of the spinal nerves.

[edit] Innervation

The intertransversarii muscle is primarily innervated by anterior rami of spinal nerves, but partly also from posterior rami ^[1].

[edit] References

1. ^ videohelp.com

[edit] External links

• -107347889 at GPnotebook
• LUC intt
• Duke Orthopedics intertransversarii
• Intertransversarii at eMedicine Dictionary

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

v • d • e List of muscles of torso (TA A04.3-5, GA 4.397) Back splenius (capitis, cervicis) · erector spinae (iliocostalis, longissimus, spinalis) · latissimus dorsi transversospinales: (semispinalis dorsi, semispinalis cervicis, semispinalis capitis, multifidus, rotatores) · interspinales · intertransversarii Vertebral column: trapezius · latissimus dorsi · rhomboid (major, minor) · levator scapulae fascia: Thoracolumbar fascia Thorax intercostales (external, internal, innermost) · subcostales · transversus thoracis · levatores costarum · serratus posterior (inferior, superior) · diaphragm Thoracic cavity: pectoralis major · pectoralis minor · subclavius · serratus anterior fascia: Pectoral fascia · Clavipectoral fascia Abdominopelvic Abdomen/ wall Anterior/ lateral Abdominal external oblique · Transversus abdominis/Conjoint tendon · Rectus sheath (rectus abdominis, pyramidalis) · Arcuate line · Tendinous intersection Cremaster · Abdominal internal oblique Fascia/abdominal fascia: panniculus adiposus (Fascia of Camper) · stratum membranosum (Fascia of Scarpa) · Transversalis fascia (Interfoveolar ligament) Linea alba · Linea semilunaris · Inguinal triangle Inguinal canal (Deep inguinal ring, Superficial inguinal ring, Intercrural fibers, Crura of superficial inguinal ring) Inguinal ligament (Pectineal ligament, Lacunar ligament, Reflected ligament) Posterior quadratus lumborum · psoas major/psoas minor · iliacus  · iliopsoas fascia (Iliac fascia/Iliopectineal arch) Pelvis levator ani (iliococcygeus, pubococcygeus, puborectalis) · coccygeus fascia/pelvic fascia visceral (Rectovaginal fascia, Rectoprostatic fascia) · parietal (Obturator fascia/Tendinous arch, Piriformis fascia) floor/diaphragm: Superior fascia of pelvic diaphragm (Pubovesical ligament, Puboprostatic ligament) · Inferior fascia of pelvic diaphragm Anococcygeal body

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