What is the insertion point for the splenius capitis muscle?

The splenius capitis is a key muscle in the back of the neck that plays a significant role in head movement and neck stabilization. Its insertion point is located at the mastoid process of the temporal bone and the occipital bone of the skull. Understanding this attachment is crucial because it allows the muscle to execute actions such as neck extension, lateral flexion, and rotation of the head.

When the splenius capitis contracts, it can help draw the head backward or tilt it towards the side of the muscle that is contracting, which is essential for various movements and maintaining posture. Recognizing the specific anatomical location of the insertion helps in both therapeutic practices and understanding the biomechanics of the head and neck.

In contrast, the other options represent different anatomical structures and are not correct insertion points for the splenius capitis muscle. The thoracic vertebrae are related to different muscles in the back, the sternum and clavicle serve as attachments for other muscles like the pectoralis major, and the cervical vertebrae don’t provide the specific points of insertion for the splenius capitis. Understanding these distinctions is important for effectively applying massage therapy techniques and for overall knowledge of muscle anatomy.