Spinalis

Spinalis is a portion of the Erector spinae, a bundle of muscles and tendons, located nearest to the spine. It is divided into three parts: Spinalis dorsi, Spinalis cervicis, and Spinalis capitis.

Spinalis Dorsi

The Spinalis Dorsi is the smallest and most medial column of muscles in the erector spinae. It is usually blended with the Semispinalis dorsi.

Spinalis Cervicis

The Spinalis Cervicis (Spinalis colli) is an inconstant muscle, which arises from the lower part of the ligamentum nuchae, the spinous process of the seventh cervical, and sometimes from the spinous processes of the first and second thoracic vertebrae, and is inserted into the spinous process of the axis, and occasionally into the spinous processes of the two vertebrae below it.

Spinalis Capitis

The Spinalis Capitis (Biventer cervicis) is usually inseparable from the Semispinalis capitis.

Function

The Spinalis muscles are responsible for extending the vertebral column and aiding in the posture and curvature of the spine.

Clinical Significance

Injury or strain to the Spinalis muscles can result in back pain or loss of mobility. Treatment typically involves physical therapy and pain management.

See Also

• Erector spinae muscles
• Semispinalis muscles
• Spinalis Thoracis
• Spinalis Cervicis
• Spinalis Capitis

References

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