Coronary Circulation and the 12 Lead EKG
The heart is surrounded by fibroserous sac, the pericardium. This is composed of two layers and anchors it to the surrounding structures
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.
5 Major Coronary Arteries | Right coronary artery:
Great visuals. Coronary artery supply and corresponding MIs | Sketchy Medicine
Anatomy of heart and direction of blood flow
Coronary Circulation Pathway | Coronary Circulation Coronary circulation