You learn something new every day!
,"Dead bones are dry and brittle, but living bones feel wet and a little soft. They are also slightly flexible, so they can absorb pressure. Like most parts of the body, bones have a network of blood vessels and nerves running through them, and they bleed when broken. Up to one-third of the weight of a living bone is water.
""If your stomach didn't develop a new layer of mucus every two weeks, the acids would cause your stomach to dissolve.","There are intricate forces at play to make sure that when stomach acid is done with your dinner, it doesn’t move on to eating your gut itself. There’s a protective layer of mucus in the stomach that keeps the two warring factions apart with a special neutralizing agent.
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