Abraham Lincoln grew from youth to manhood on this southern Indiana soil. Many character and moral traits of one of the world's most respected leaders was formed and nurtured here. Explore Lincoln's boyhood and learn about the boy who would one day become the leader of our nation.
Cardiopulmonary resuscitation, commonly known as CPR, is an emergency procedure that combines chest compression often with artificial ventilation in an effort to manually preserve intact brain function until further measures are taken to restore spontaneous blood circulation and breathing in a person who is in cardiac arrest.
How do the heart and blood vessels work? The heart works by following a sequence of electrical signals that cause the muscles in each chamber to contract in a certain order. If these electrical signals change, the heart may not pump as well as it should. The sequence of each heartbeat is as follows: