What Action Does The Sternocleidomastoid Perform? When acting together it flexes the neck and extends the head. When acting alone it rotates to the opposite side (contralaterally) and slightly (laterally) flexes to the same side. It also acts as an accessory muscle of inspiration. What does Sternocleidomastoid attach to? Origin Insertion Superior border/anterior surface of
What Are Cranial Structures? Joints made of strong, fibrous tissue (cranial sutures) hold the bones of your baby’s skull together. The sutures meet at the fontanels What are the three main structures of the skull? The skull consists of three parts, of different embryological origin—the neurocranium, the sutures, and the facial skeleton (also called the
What Is The Clivus In The Brain? General. The clivus (Latin for “slope”) forms the central skull base. It is formed by the synostosis of the basisphenoid (sphenoid bone) and basiocciput (occipital bone). During early development, the axial sclerotomes of the first somites are integrated into the skull base to form the basioccipital part of