Historical biological theories tend to describe that behaviors are inherited biological tendencies passed down through evolution, and contemporary biosocial theories are explained by saying that genes and other biological features are more facilitators of human behavior instead of determinants.
Like the heart, the LVAD is a pump. One end hooks up to the left ventricle -- that's the chamber of the heart that pumps blood out of the lungs and into the body. The other end hooks up to the aorta, the body's main artery. A tube passes from the device through the skin.
The left ventricle is the main pumping chamber of the heart, and it is responsible for pumping oxygen-rich blood to the entire body, as stated by the American Heart Association. The human heart consists of four chambers: the right atrium, the right ventricle, the left atrium and the left ventricle.