8 Quick Facts about Veins!

Veins are fascinating. They are responsible for most of the blood flow through the body. We have so many veins, scientists haven’t even calculated the total number. Here are eight cool facts about veins that you may not know.

  1. Veins hold up to 70% of the body’s blood.
  2. If stretched out, our veins would cover a distance of over 60,000 miles!
  3. Veins are made up of three layers: membranous tissue, muscles, and connective tissue.
  4. Some veins can constrict in response to nerve stimulation.
  5. Varicose veins are a common condition and affect up to 35% of adults.
  6. The first case of varicose veins dates all the way back to 86 BC!
  7. Giraffes have the greatest pressure in their legs of all animals. They never get varicose veins, however, because their skin is very thick.
  8. Women are more likely to be effected by varicose veins than men due to hormones.
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