Splenius capitis

Splenius Capitis is a broad, straplike muscle in the back of the neck. It pulls on the base of the skull from the vertebrae in the neck and upper thorax. It is involved in movements such as shaking the head.

Anatomy

The Splenius Capitis originates from the lower half of the ligamentum nuchae, a large midline ligament in the neck, and from the spinous processes of the seventh cervical (C7) and the first three thoracic (T1-T3) vertebrae. It attaches to the mastoid process, a prominent bony bump just behind the ear, and the lateral third of the superior nuchal line, a bony line at the back of the skull.

Function

The Splenius Capitis acts to rotate the head and bend it to one side. It also acts to extend the neck. When both sides (left and right) act together, they can also extend the head.

Clinical significance

Due to its role in neck and head movement, the Splenius Capitis can be a source of pain in conditions affecting the neck. It may be involved in tension headaches and in whiplash injuries.

See also

• Splenius cervicis
• List of muscles of the human body

Splenius capitis Resources
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