Interspinales muscles

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Interspinales muscles
Details
Latin Musculi interspinales
Spinous process
Spinous process
Posterior rami of spinal nerves
Actions Extension of vertebral column.
Identifiers
Gray's p.400
Dorlands
/Elsevier
m_22/12549431
TA A04.3.02.301
FMA FMA:22841
Anatomical terms of muscle

The Interspinales are short muscular fasciculi, placed in pairs between the spinous processes of the contiguous vertebræ, one on either side of the interspinal ligament.

  • In the cervical region they are most distinct, and consist of six pairs, the first being situated between the axis 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 the thoracic region, they are found between the first and second vertebræ, and sometimes between the second and third, and between the eleventh and twelfth.
  • In the lumbar region there are four pairs in the intervals between the five lumbar vertebræ. There is also occasionally one between the last thoracic and first lumbar, and one between the fifth lumbar and the sacrum.

See also[edit]

Intertransversarii

Iliocostalis

Longissimus

Spinalis

Levatores costarum

External links[edit]

This article incorporates text from a public domain edition of Gray's Anatomy.