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Choose a Page:What is the skin for?How do muscles work?*How many bones do we have?*What is inside a bone?What are veins and arteries?How does the heart work?How do our joints work? How many bones do we have? Humans have 206 bones in their bodies. There are 29 in the skull, 26 in the spine, 32 in each arm, and 31 in each leg. Other bones form the ribcage.   Previous: Back Book: Best Ever Q&A Section: Science & Technology Chapter: Human Body