Special nerve endings in your esophagus can feel when food is too hot or cold, helping protect you from injury!
Human Body - Facts for Kids

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Random Facts About Human Body For Kids
Your bones have their own blood supply — about 10% of your heart‘s blood output goes to your bones!
Your nail cells are so strong that they can stay intact for thousands of years after death!
Every bone in your body is completely rebuilt about every 8–10 years through a process called remodeling!
Basic Information
The scientific name for kidney-related things is “renal” — that’s why doctors sometimes call kidney medicine “renal medicine.”