Anatomy

 LEVATOR SCAPULA

  

Latin	musculus levator scapulae
Origin	Posterior tubercles of transverse processes of C1 - C4 vertebrae
Insertion	Superior part of medial border of scapula
Artery	dorsal scapular artery
Nerve	cervical nerve (C3, C4) and dorsal scapular nerve (C5)
Actions	Elevates scapula and tilts its glenoid cavity inferiorly by rotating scapula

ANATOMY OF THE SPINE




submitted by Manna Lu

Bones of the Skull - Referenced by Colleen

The skull consists of 22 cranial and facial bones. Attachment points for the muscles of the head and neck are located on the exterior surfaces of the skull and allow for important movement like chewing, speech, and facial expressions. Teeth are rooted into deep sockets in the mandible and maxillary bones. The upper portions of the digestive and respiratory tracts are also housed within the hollow oral and nasal cavities of the skull.   (http://www.innerbody.com/)

Anatomy of the Sternum:

The Manubrium, Body and Xiphoid Process

The sternum, commonly known as the breastbone, is a long, narrow flat bone that serves as the keystone of the rib cage and stabilizes the thoracic skeleton. Several muscles that move the arms, head, and neck have their origins on the sternum. It also protects several vital organs of the chest, such as the heart, aorta, vena cava, and thymus gland that are located just deep to the sternum. It is located along the body's midline in the anterior thoracic region just deep to the skin. It is a flat bone about six inches in length, around an inch wide, and only a fraction of an inch thick. (http://www.innerbody.com)