15 Interesting Human Body Facts
1.The human body is a complex and intricate machine that performs many processes at the same time.
2.Babies are born with about 300 bones, while adults have 206 bones.
3.Many of a baby’s bones are made of cartilage, a tough and flexible connective tissue.
4.As babies grow, cartilage turns into hard bone through a process called ossification, and some bones fuse together.
5.The human body contains about 30 trillion cells.
6.Scientists have identified around 200 different types of cells in the human body.
7.Stem cells can develop into many different types of cells and may help treat diseases because they can repair and regenerate tissue.
8.The brain cannot feel pain because it does not have pain receptors called nociceptors.
9.Headaches occur in the tissues surrounding the brain, not in the brain itself.
10.Stomach acid has a pH of about 1–2, making it extremely acidic—almost as strong as battery acid.
11.Heartburn happens when stomach acid moves back up into the esophagus.
12.Burping is the body’s way of releasing extra air that is swallowed while eating or drinking.
13.The epiglottis is a flap of cartilage that prevents choking by closing off the windpipe when you swallow.
14.Humans are excellent endurance runners because of adaptations like sweating and spring-like tendons.
15.The human body has more than 600 muscles, including skeletal, cardiac, and smooth muscles.
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