The rotatores insert on the spinous process of which vertebra?

The rotatores insert on the spinous process of which vertebra?

• A. Spinous process of one superior vertebra
• B. Spinous process of several inferior vertebrae
• C. Transverse process of the same vertebra
• D. Inferior nuchal line

Answer: (A)

Rotatores are part of the transversospinalis group and connect a vertebra’s transverse process to the spinous process of the vertebra directly above it. This means their insertion is on the spinous process of the vertebra immediately superior to the one they originate from. Short rotatores insert to the next vertebra above, while longer ones go two levels up. This arrangement supports small, rapid adjustments of rotation and stabilization at a single vertebral level, and they are innervated by the dorsal rami.

Rotatores are part of the transversospinalis group and connect a vertebra’s transverse process to the spinous process of the vertebra directly above it. This means their insertion is on the spinous process of the vertebra immediately superior to the one they originate from. Short rotatores insert to the next vertebra above, while longer ones go two levels up. This arrangement supports small, rapid adjustments of rotation and stabilization at a single vertebral level, and they are innervated by the dorsal rami.