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FlipFact of the Day: If your blood vessels were laid out end to end, they would encircle the Earth about two and a half times.

If all the blood vessels in your body were connected end to end and stretched out, the resulting thread would be approximately 100,000 km (60,000 mi) long — and your capillaries alone would account for roughly 80,000 km of that length.

Our planet’s equatorial circumference is about 40,075 km (24,901 mi), while its meridional (pole-to-pole) circumference is 40,008 km (24,860 mi). Either way, there are enough blood vessels in your body to encircle the Earth two and a half times.

Today’s Science History Milestone: On September 10, 1984, English geneticist Sir Alec Jeffreys discovered the technique of DNA fingerprinting. Experts now use this technique for unique identification of humans, animals and other organisms. He discovered it when he studied X-ray films of tests he ran for a different gene-related project.


Still remember your 5th-grade science classes? Test your knowledge and see if you still remember these facts and fundamental concepts in human anatomy, biology, botany, and other branches of science. Click here to try the “Are You Smarter Than A Pinoy Fifth-Grader” Challenge.

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Cover image: British Heart Foundation

References

  • https://www.livescience.com/39925-circulatory-system-facts-surprising.html—–