Iliocostalis

Iliocostalis

Muscle infobox
Name = PAGENAME
Latin = musculus iliocostalis
GraySubject = 115
GrayPage = 399


Caption = Deep muscles of the back. (Iliocostalis lumborum visible at bottom right, iliocostalis dorsi visible at center right, and iliocost. cerv. visible at upper right.)


Caption2 =
Origin =
Insertion =
Action =
Blood = lateral sacral artery
Nerve = posterior branch of spinal nerve
Antagonist = Rectus abdominis muscle
MeshName =
MeshNumber =
DorlandsPre = m_22
DorlandsSuf = 12549288
The iliocostalis is the muscle immediately lateral to the longissimus that is the nearest to the furrow that separates the epaxial muscles from the hypaxial. It lies very deep to the fleshy portion of the serratus ventralis (serratus anterior).

Iliocostalis lumborum

The Iliocostalis lumborum (Iliocostalis muscle; Sacrolumbalis muscle) is inserted, by six or seven flattened tendons, into the inferior borders of the angles of the lower six or seven ribs.

Iliocostalis dorsi

The Iliocostalis dorsi (Musculus accessorius; Iliocostalis thoracis) arises by flattened tendons from the upper borders of the angles of the lower six ribs medial to the tendons of insertion of the Iliocostalis lumborum; these become muscular, and are inserted into the upper borders of the angles of the upper six ribs and into the back of the transverse process of the seventh cervical vertebra.

Iliocostalis cervicis

The Iliocostalis cervicis (Cervicalis ascendens) arises from the angles of the third, fourth, fifth, and sixth ribs, and is inserted into the posterior tubercles of the transverse processes of the fourth, fifth, and sixth cervical vertebrae.

ee also

* Semispinalis muscle
* Erector spinae
* Longissimus
* Spinalis

External links

* - "Intrinsic muscles of the back."
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* [http://www.ithaca.edu/faculty/lahr/LE2000/Back/FinishedPics/JPEGs/ErectorsFar.jpgDissection at ithaca.edu]


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Look at other dictionaries:

  • Iliocostalis — Musculus iliocostalis Rückenmuskulatur des Menschen Ursprung Darmbein und Kreuzbein Ansatz Rippen und …   Deutsch Wikipedia

  • iliocostalis — noun the lateral division of the erector spinae, consisting of the iliocostalis lumborum musculus, iliocostalis thoracis musculus, and iliocostalis cervicis musculus …   Wiktionary

  • iliocostalis — See i. (muscle). * * * il·io·cos·ta·lis käs tā ləs n the lateral division of the sacrospinalis muscle that helps to keep the trunk erect and consists of three parts: a) ILIOCOSTALIS CERVICIS b) ILIOCOSTALIS LUMBORUM c) ILIOCOSTALIS THORACIS …   Medical dictionary

  • iliocostalis — ˌilēōˌkäˈstalə̇s, tāl , täl noun ( es) Etymology: New Latin, from ilio + Late Latin costalis rib, from Latin costa rib + alis (from alis al, adjective suffix) : the lateral division of the sacrospinalis muscle that helps to ke …   Useful english dictionary

  • iliocostalis dorsi — iliocostalis dor·si dȯr .sī n ILIOCOSTALIS THORACIS …   Medical dictionary

  • iliocostalis cervicis — iliocostalis cer·vi·cis sər və səs n a muscle that extends from the ribs to the cervical transverse processes and acts to draw the neck to the same side and to elevate the ribs …   Medical dictionary

  • iliocostalis lumborum — iliocostalis lum·bor·um .ləm bȯr əm n a muscle that extends from the ilium to the lower ribs and acts to draw the trunk to the same side or to depress the ribs …   Medical dictionary

  • iliocostalis thoracis — iliocostalis tho·ra·cis thə rā səs n a muscle that extends from the lower to the upper ribs and acts to draw the trunk to the same side and to approximate the ribs …   Medical dictionary

  • iliocostalis muscle — ▪ anatomy       any of the deep muscles of the back that, as part of the erector spinae (sacrospinalis) muscle group, aid in extension (bending backward), lateral flexion (bending to the side), and rotation of the spinal column. The iliocostalis… …   Universalium

  • iliocostalis lumborum muscle — 1. musculus iliocostalis lumborum. 2. pars lumbalis musculi iliocostalis lumborum …   Medical dictionary

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