Splenius Capitis - Podcast Version 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x The splenius capitis is a deep muscle of the back. It is part of the spinotransversales muscle group and is located on the posterior aspect of the neck, covering the deep neck muscles. Attachments: Originates from the lower part of the ligamentum nuchae, and the spinous processes of C7 – T3/T4 vertebrae. The fibres attach to the mastoid process and the occipital bone of the skull. Actions: Rotate head to the same side. Innervation: Posterior rami of spinal nerves C3 and C4. Blood Supply: Muscular branches of the occipital artery from the external carotid artery. By TeachMeSeries Ltd (2026) Fig 1The splenius muscles, located with the superficial layer of intrinsic back muscles. 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 Frequent questions What is the splenius capitis muscle? The splenius capitis is a deep muscle located in the back of the neck, part of the spinotransversales muscle group. It covers the deeper neck muscles and plays a role in head movement. What are the attachments of the splenius capitis? The splenius capitis originates from the lower ligamentum nuchae and the spinous processes of the C7 to T3/T4 vertebrae. Its fibres insert into the mastoid process and the occipital bone of the skull. What actions does the splenius capitis perform? The primary action of the splenius capitis is to rotate the head to the same side. It also assists in extending the head and neck. How is the splenius capitis innervated? The splenius capitis is innervated by the posterior rami of the spinal nerves C3 and C4. This innervation is crucial for its motor function. What is the blood supply to the splenius capitis? The splenius capitis receives its blood supply from the muscular branches of the occipital artery, which is a branch of the external carotid artery. This ensures adequate oxygen and nutrients for muscle function. Rate This Article