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Giraffes in Antigravity Suits
How do giraffes, which stay on their feet all day, keep blood from pooling in their legs? Find out on today’s Creation Moments Minute.
Modern science continues to uncover engineering wonders that enable giraffes to keep blood flowing evenly to their brain. Researchers have discovered that giraffes, unlike human beings, have a valve in the jugular vein. But these valves work in the wrong direction to help blood stay in the head. Instead, they close when a giraffe lowers its head, preventing used blood from backing up into the brain.
But what about the giraffe’s legs? Scientists have found that the skin on their legs is very tight‑fitting. When a giraffe walks, its muscle movement within that tight skin helps pump used blood out of the legs.
If life owed its existence to chance and genetic mistakes, there wouldn’t be any giraffes. But what a wonder of God’s design these stately creatures are!
For the Creation Moments Minute, I’m Darren Marlar.
Ref: Pedley, T.J. 1987. “How giraffes prevent oedema.” Nature, 329:3, Sept., p. 13.