Intertransversarii muscle

Intertransversarii muscle

Infobox Muscle
Name = Intertransversarii muscle
Latin = musculi intertransversarii
GraySubject = 115
GrayPage = 401


Caption = Intertransversarii muscles
Origin = Transverse process
Insertion = Transverse process above
Blood =
Nerve = Anterior rami of spinal nerves
Action = Lateral flexion of trunk
MeshName =
MeshNumber =
DorlandsPre = m_22
DorlandsSuf = 12549464
The Intertransversarii are small muscles placed between the transverse processes of the vertebræ.

Divisions

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.

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.

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.

Innervation

The intertransversarii muscle is primarily innervated by anterior rami of spinal nerves, but partly also from posterior rami [ [http://download.videohelp.com/vitualis/med/i-backmm.htm videohelp.com] ] .

References

External links

*
*
*
*


Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Muscle — is the tissue of the body which primarily functions as a source of power. There are three types of muscle in the body. Muscle which is responsible for moving extremities and external areas of the body is called "skeletal muscle." Heart… …   Medical dictionary

  • Muscle — For other uses of Muscle , see Muscle (disambiguation). A top down view of skeletal muscle Muscle (from Latin …   Wikipedia

  • Pectoralis major muscle — Pectoralis major Pectoralis major Gray s subject #122 436 …   Wikipedia

  • Trapezius muscle — This article is about the human skeletal muscle. For the trapezius muscles found in cats, see trapezius muscles (cat). Trapezius trapezius …   Wikipedia

  • Multifidus muscle — Deep muscles of the back. (Multifidus shaded in red.) …   Wikipedia

  • Rhomboid major muscle — Rhomboid major Muscles connecting the upper extremity to the vertebral column. Rhomboid major indicated in red. Latin musculus rhomboideus major Gray s …   Wikipedia

  • Transversus thoracis muscle — Posterior surface of sternum and costal cartilages, showing Transversus thoracis. Latin musculus transversus thoracis …   Wikipedia

  • Innermost intercostal muscle — Latin musculus intercostalis intimus Origin Upper border of a rib Insertion    Inferior border of the rib above Artery …   Wikipedia

  • musculi intertransversarii thoracis — [TA] intertransverse muscles of thorax: poorly developed muscle bundles extending between the anterior tubercles of adjacent thoracic vertebrae, innervated by posterior primary rami of spinal nerves, and acting to bend the vertebral column… …   Medical dictionary

  • Human back — Back redirects here. For other uses, please see Back (disambiguation). The human back is the large posterior area of the human body, rising from the top of the buttocks to the back of the neck and the shoulders. It is the surface opposite to the… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”