What the Heck Is That? Ordinary Things That Look Insane Microscopic!
Arteries Look like Highways for Jelly Donuts
With a microscope zoomed in, an artery turns into a stretchy tunnel lined with layers of muscle and elastic fibers—think of it as nature’s reinforced tubing. And cruising through this tunnel are red blood cells shaped like soft, squishy discs that look suspiciously like jelly donuts without the filling.
They flow single file in tight spots, delivering oxygen like tiny postal workers on a nonstop shift. The artery walls pulse gently to keep the traffic moving, and everything works together like a high-efficiency transit system. It’s wild to think this whole setup runs under the radar 24/7 and somehow never gets stuck in rush hour. Usually.
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