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Interspinales muscles

From Wikipedia, the free encyclopedia
Short bundles of skeletal muscle fibre
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Interspinales muscles
Details
OriginSpinous process
InsertionSpinous process
NervePosterior rami ofspinal nerves
ActionsProprioception of vertebral column
Identifiers
Latinmusculi interspinales
TA98A04.3.02.301
TA22290
FMA71306 22841, 71306
Anatomical terms of muscle

Theinterspinales are shortmuscle fascicles, found in pairs between the spinous processes of the contiguousvertebrae, one on either side of theinterspinal ligament.

  • In thecervical region, thecervical interspinales are most distinct, and consist of six pairs, the first being situated between theaxis and third vertebra, and the last between the seventh cervical and the first thoracic. They are small narrow bundles, attached, above and below, to the apices of the spinous processes.
  • In thethoracic region, thethoracic interspinales are found between the first and second vertebrae, and sometimes between the second and third, and between the eleventh and twelfth.
  • In thelumbar region, there are four pairs oflumbar interspinales in the intervals between the five lumbar vertebrae. There is also occasionally one between the last thoracic and first lumbar, and one between the fifth lumbar and thesacrum.

See also

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References

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Public domainThis article incorporates text in thepublic domain frompage 400 of the 20th edition ofGray's Anatomy(1918)

Back
splenius
erector spinae
Transversospinales
Vertebral column
Fascia
Thorax
Thoracic cavity
Fascia
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