The heart is surrounded by fibroserous sac, the pericardium. This is composed of two layers and anchors it to the surrounding structures
Great visuals. Coronary artery supply and corresponding MIs | Sketchy Medicine
Blood flow of heart | blood flow physiology path of blood flow diastole systole Trace a drop of blood through the heart. After 21 years, I can still do it!
Looking at the outside of the heart, you can see the heart is made of muscle. The strong muscular walls contract (squeeze), pumping blood to the arteries.
Coronary Circulation and the 12 Lead EKG
Heart Coronary Artery System Diagram | Blood Supply to the Heart (Coronary Circulation) Diagram
Heart Blood Flow Path | ... blood passes through the heart twice for the body to be supplied once