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The Structure of the heart | Physiology | Biology | FuseSchool

Our heart, a universally recognised symbol of love, kindness and compassion.

The heart is one of the hardest-working organs in your body after all it is responsible for pumping blood throughout a vast array of blood vessels, spending 100,000 kilometers in total.

All those vessels laid end-to-end would encircle the earth 2.5 times all to be done in a heartbeat. This powerful muscular organ approximately the size of a fist, is usually drawn symmetrically like this; in reality, your heart is asymmetrical with the left side being more muscular than right for reasons that we'll explore later on.

The heart is located in the middle of your chest but with a slight all to the left because of the bigger left side. In an anatomically correct model of the human heart the vertical septum separates the right side and the left side. Because we are looking at the heart on the front, the left side is here and the right side is here. (Watch the video to see where!)



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