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Interosseous muscles of the neck, chest and lumbar region
Medical expert of the article
Last reviewed: 07.07.2025
The interspinous muscles of the neck, chest and lower back (mm. interspinales cervicis, thoracis et lumborum) connect the spinous processes of the vertebrae with each other, starting from the second cervical and below. They are better developed in the cervical and lumbar sections of the spinal column, which are characterized by the greatest mobility. In the thoracic part of the spine, the interspinous muscles are weakly expressed (may be absent).
Function: participate in the extension of the corresponding parts of the spine.
Innervation: posterior branches of the spinal nerves.
Blood supply: deep cervical artery, posterior intercostal and lumbar arteries.
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