Thoracic Key

Blood Supply of the Heart Heart Structure and Blood Supply It seems odd that the tissues making up the heart must have their own separate blood supply. You might think…

Pumping Action of the Heart Blood Flow Through the Heart Blood is pumped through the chambers of the heart and out through the great vessels by a simple squeezing action…

Valves of the Heart Valve Structure and Function Like any pump, the heart has valves to keep the blood flowing in the right direction. Proper function of these small flaps…

Structure and Function of the Normal Heart Before you begin to learn about heart disease, you must learn how the normal heart is constructed and how it functions. This is…