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What is Understanding Bones and Joints about?
Bones provide structure and protect organs. They are made of collagen and calcium phosphate. Bones grow through growth plates in children and are constantly renewed by bone cells. Muscles pull on joints to allow movement and are controlled by the brain and nervous system. There are three types of muscle - skeletal, smooth, and cardiac. Joints are where bones meet and include immovable, partially movable, and freely movable joints like hinges, pivots and ball-and-socket, which allow different ranges of motio
- Author
- Alena Armstrong
- Language
- EN