Biologia-Vida |
The incredible tangle of blood vessels in the human body. When you exercise, the blood takes about 10 seconds to get to your big toe and back to the heart;the small heart of a child alone already needs to pump blood through about 60,000 miles of blood vessels, that's long enough to circle the Earth - twice! Your heart beats about 100,000 times a day, 40 million times a year, and more than two and a half billion times during an average time of life, everything to make sure that every part of your body gets the oxygen pumping and nutrients carried by the blood.
Source: National Geographic / Heart - National Geographic
Montagem: Biologia-vida
Image idea by Scientific Illustration
Postado por Thalita Morais
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