Which joint allows rotation of the head relative to the spine toward the opposite side?

Which joint allows rotation of the head relative to the spine toward the opposite side?

• A. Atlantoaxial Joint
• B. Intervertebral Joints
• C. Nuchal Joint
• D. Atlantoocciptial Joint

Answer: (D)

Rotation of the head to face the opposite side is produced by the atlantoaxial joint, the joint between the atlas (C1) and the axis (C2). This is a pivot-type joint that allows the atlas to rotate around the dens of the axis, letting you turn your head left or right. The atlantooccipital joint (between the skull and C1) mainly enables nodding (flexion/extension) and only a small amount of rotation. Intervertebral joints contribute to movement within the spine, but the primary head rotation comes from the atlantoaxial joint.

Rotation of the head to face the opposite side is produced by the atlantoaxial joint, the joint between the atlas (C1) and the axis (C2). This is a pivot-type joint that allows the atlas to rotate around the dens of the axis, letting you turn your head left or right. The atlantooccipital joint (between the skull and C1) mainly enables nodding (flexion/extension) and only a small amount of rotation. Intervertebral joints contribute to movement within the spine, but the primary head rotation comes from the atlantoaxial joint.