Splenius Capitis Muscle, Posterior View

Description

Running obliquely from the midline to the lateral skull, the splenius capitis is isolated in posterior view, with its fibers arising from the ligamentum nuchae and spinous processes of C7 to T3 or T4 and ascending superolaterally to the mastoid process and adjacent lateral third of the superior nuchal line. Inferior and slightly lateral, splenius cervicis may be visible as a companion band from upper thoracic spinous processes toward the transverse processes of C1 to C3. Deep to the splenii, the semispinalis capitis and cervicis and portions of longissimus capitis form the medial paraspinal column, while superficial landmarks such as the occiput, cervical spinous processes, and the superior medial scapular borders orient the neck-shoulder region. Fiber direction is the story here. Clinically, separating splenius capitis from the deeper extensors clarifies why unilateral contraction produces ipsilateral rotation and lateral flexion, a pattern that helps distinguish splenius strain from semispinalis-dominant pain on exam. Trigger points in splenius capitis commonly refer pain to the occiput and temporal region and can mimic cervicogenic headache after whiplash. Surgeons working through posterior cervical approaches also benefit from a clean map of the superficial-to-deep muscle layers, since splitting planes and retraction near the midline influence postoperative neck pain and muscle denervation risk. Use this artwork in gross anatomy and kinesiology teaching to pair attachments with action, or in physiotherapy and sports medicine materials explaining posterior neck strain, posture-related overuse, and manual therapy targets. It also reads well in operative texts and patient-facing spine clinic handouts when you need clear posterior cervical muscle layering without distracting anterior structures. Anatomical accuracy verified by SciePro's Medical Advisory Board.