write about structure of heart and double circulation system
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structure of heart includes the 4 chambers .2 arteries and 2 ventricles.many parts of it becomes non functional where they are function in the childhood stage.for example foramen ovale etc to pump the blood from right artery to the left ventricle.many valves are included in it for the circulation of the blood.
the double circulation involves the both lungs and the heart at which the blood touches the heart 2 times. it facilitates like the supply of nutrients etc.
the double circulation involves the both lungs and the heart at which the blood touches the heart 2 times. it facilitates like the supply of nutrients etc.
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