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.
A normal heart has four chambers. The upper two chambers are the right and left atria. The lower two chambers are the right and left ventricles. Blood is pumped through the four heart chambers with the help of four heart valvesâthe tricuspid, pulmonary, mitral and aortic valves. The heartâs job is to supply the body with oxygen-rich blood.