Interspinales Muscle

Authors

Affiliations

Nathaniel Yomogida, B.S., SPT

Doctor of Physical Therapy

B.S. in Kinesiology

Chloë Kerstein, B.S., SPT

Doctor of Physical Therapy

B.A. in Neuroscience

OIAN

Posterior view of the deep segmental back muscles¹

Interspinales Muscles OIAN

Muscle	Origin	Insertion	Nerve	Action
Interspinales Cervicis	/The Archive/Anatomy/Skeletal Muscles/Muscles of the back/Deep Segmental Back Muscles/interspinales.html#origin	/The Archive/Anatomy/Skeletal Muscles/Muscles of the back/Deep Segmental Back Muscles/interspinales.html#insertion	?var:ref-interspinales-cervicis.nerve	/The Archive/Anatomy/Skeletal Muscles/Muscles of the back/Deep Segmental Back Muscles/interspinales.html#action
Interspinales Lumbora	/The Archive/Anatomy/Skeletal Muscles/Muscles of the back/Deep Segmental Back Muscles/interspinales.html#origin	/The Archive/Anatomy/Skeletal Muscles/Muscles of the back/Deep Segmental Back Muscles/interspinales.html#insertion	?var:ref-interspinales-lumbora.nerve	/The Archive/Anatomy/Skeletal Muscles/Muscles of the back/Deep Segmental Back Muscles/interspinales.html#action

Muscle	Origin	Insertion	Innervation	Action
Interspinales cervicis
Interspinales lumbora

Interspinales Cervicis

Origin

C1-C7: SP of inferiorly adjacent vertebrae¹

Insertion

C1-C7: SP of superiorly adjacent vertebrae¹

Innervation

Spinal nn. (Posterior Rami)¹

Action

Extends cervical and Lumbar spines¹

Interspinales Lumbora

Origin

L1-L5: SP of inferiorly adjacent vertebrae¹

Insertion

L1-L5: SP of superiorly adjacent vertebrae¹

Innervation

Spinal nn. (Posterior Rami)¹

Action

• BIL: Stabilizes and extends cervical and lumbar vertebrae¹
• UNIL: I/L SB cervical and lumbar spines¹

References

1.

Gilroy AM, MacPherson BR, Wikenheiser JC, Voll MM, Wesker K, Schünke M, eds. Atlas of Anatomy. 4th ed. Thieme; 2020.