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Hello, today we are going to show you a lamb's heart and how the blood circulates.

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Here we have the parts of the heart. In this photo you can see two lines,

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the pink one is the systemic circulation and the blue one is the pulmonary circulation.

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So now we have the heart, the top and the bottom side.

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In the top side we can see the left and the right atrium.

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Now we take the laboratory clamp and we introduce it in the pulmonary artery that goes to the right ventricle, and we cut it.

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As you can see, here we have the tricuspid valve.

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Now we introduce the laboratory clamp in the aorta that goes to the left ventricle, and we cut it.

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As you can see, here we have the mitral valve.

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Now you can see that the aorta is connected with the left ventricle and the pulmonary artery is connected with the right ventricle.