Rectus Capitis Posterior Major - Podcast Version 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x The rectus capitis posterior major is a suboccipital muscle of the neck. It is the largest of the rectus capitis muscles and is located laterally to the rectus capitis posterior minor. Attachments: Originates from the spinous process of the C2 vertebrae (axis) and inserts into the lateral part of the inferior nuchal line of the occipital bone. Actions: Extension and rotation of the head. Innervation: Suboccipital nerve (posterior ramus of C1). Blood Supply: Vertebral artery and deep descending branches of the occipital artery. By TeachMeSeries Ltd (2026) Fig 1The left occipital muscles, which lie underneath the deep muscles of the back. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Pro Feature - Dissection Atlas Dissection of the suboccipital muscles of the neck Dissection of the suboccipital muscles of the neck You've Discovered a Pro Feature Access our Dissection Image Library Enhance your understanding with high-resolution dissection images showcasing real-life anatomy. Learn More Frequent questions What is the rectus capitis posterior major? The rectus capitis posterior major is a key suboccipital muscle in the neck, known for being the largest among the rectus capitis muscles. It plays a significant role in head movement and stability. Where does the rectus capitis posterior major originate and insert? This muscle originates from the spinous process of the C2 vertebra (axis) and inserts into the lateral part of the inferior nuchal line on the occipital bone. This positioning aids in its functional capabilities. What actions are performed by the rectus capitis posterior major? The primary actions of the rectus capitis posterior major include extension and rotation of the head. These movements are essential for various neck motions and maintaining posture. How is the rectus capitis posterior major innervated? The innervation of the rectus capitis posterior major is provided by the suboccipital nerve, which is the posterior ramus of the C1 spinal nerve. This nerve supplies the muscle, enabling its movement. What is the blood supply to the rectus capitis posterior major? The rectus capitis posterior major receives its blood supply from the vertebral artery and the deep descending branches of the occipital artery. This vascular supply is crucial for the muscle's function and health. Rate This Article