Totalitarianism is a political system in which the state holds total authority over the society and seeks to control all aspects of public and private life whenever necessary. The concept of totalitarianism was first developed on a positive sense in the 1920s by the Italian fascists.
The sternum or breastbone is a vertical flat bone lying at the anterior middle part of the chest. Externally, it is made up of compact bone. Inside of it is a cancellous or spongy tissue that is entirely vascular. The adult length of the sternum measures 15-17 cm.
Home > Skeletal System > Bones of the Chest and Upper Back > Sternum. 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. The sternum is located along the bodyâs midline in the anterior thoracic region just deep to the skin.