<P> Humans have known about the heart since ancient times , although its precise function and anatomy were not clearly understood . From the primarily religious views of earlier societies towards the heart , ancient Greeks are considered to have been the primary seat of scientific understanding of the heart in the ancient world . Aristotle considered the heart to be organ responsible for creating blood ; Plato considered the heart as the source of circulating blood and Hippocrates noted blood circulating cyclically from the body through the heart to the lungs . Erasistratos ( 304 -- 250 BCE ) noted the heart as a pump , causing dilation of blood vessels , and noted that arteries and veins both radiate from the heart , becoming progressively smaller with distance , although he believed they were filled with air and not blood . He also discovered the heart valves . </P>
<P> Humans have known about the heart since ancient times , although its precise function and anatomy were not clearly understood . From the primarily religious views of earlier societies towards the heart , ancient Greeks are considered to have been the primary seat of scientific understanding of the heart in the ancient world . Aristotle considered the heart to be organ responsible for creating blood ; Plato considered the heart as the source of circulating blood and Hippocrates noted blood circulating cyclically from the body through the heart to the lungs . Erasistratos ( 304 -- 250 BCE ) noted the heart as a pump , causing dilation of blood vessels , and noted that arteries and veins both radiate from the heart , becoming progressively smaller with distance , although he believed they were filled with air and not blood . He also discovered the heart valves . </P>
who discovered the different valves of the heart
who discovered the different valves of the heart
Erasistratos
Erasistratos