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.

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 is the circulation of blood in the blood vessels of the heart muscle (the myocardium). The vessels that deliver oxyge...

Coronary circulation is the circulation of blood in the blood vessels of the heart muscle (the myocardium). The vessels that deliver oxyge...

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!

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!

The heart is surrounded by fibroserous sac, the pericardium. This is composed of two layers and anchors it to the surrounding structures

Cardiovascular System Anatomy and Physiology

The heart is surrounded by fibroserous sac, the pericardium. This is composed of two layers and anchors it to the surrounding structures

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