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Skeletal System

Discover the key functions of the skeletal system, including shape support, mobility, organ protection, blood cell production, and mineral storage. Learn about bone structure, different types of skeletons, joint types, and common bone diagnoses. Plus, fun facts about the skeletal system!

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Skeletal System

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  1. Skeletal System

  2. Functions of the Skeletal System • Provides shape and support • Enables you to move • Protects your organs • Produces blood cells • Stores minerals and other materials until your body needs them

  3. How many bones are there in the skeleton? • It depends on your age. • A newborn has 275 • An adult has 206 • Some of the bones a baby has fuse together, like the bones of a babies skull

  4. Types of Skeletons • Appendicular • Any appendage • Legs and arms • Axial • Head and chest and spine

  5. Bone Structure • Compact Bone • Hard and dense but not solid • Spongy bone • Full of small spaces but strong • Marrow • Red found in most of our bones as a kid • makes blood cells • Yellow found in most of the bones in adults • Stores fat and energy reserves

  6. Strength • Made of minerals just like rocks • As hard as a rock • Growth • Alive because they contain cells, tissues and nerves • Forms new bone tissue as you grow • Development • Skeleton is mostly made of cartilage • It is replaced with bone by the time you stop growing

  7. Joints • A place in the body where 2 bones come together • They allow bones to move in different ways • 2 kinds • Immovable joints allow for little or no movement • Movable joints allow the body to make a wide range of movements • There are 230 movable joints in the body

  8. Parts of a Joint • Ligament • These are strong connective tissues that hold bones together • Cartilage • This covers the ends of the bones and keeps them from rubbing against each other • Fluid • This lubricates the ends of the bones allowing them to move smoothly over each other

  9. Bone diagnoses • Fractures • Dislocation • Sprain • Arthritis • Osteoporosis

  10. Fractures • A break in a bone

  11. Dislocation • When the end of a bone comes out of its joint

  12. Sprain • When ligaments are stretched to far and tear in places

  13. Arthritis • Disease of the joints that makes movement painful or impossible • Inflammation of the joint

  14. Osteoporosis • A condition in which the bodies bones become weak and break easily

  15. Fun facts about the Skeletal System to end on • Our bone is six times stronger than steel if both are of the same weight. • The size of the smallest bone is equivalent to the size of a rice grain. • Of the 206 bones in the skeletal system, 52 of them make both our feet, 52 in your hands and 14 your face. • After death, cartilage rots faster than bone. This is why the skulls of skeletons have no nose or ears. • The only bone in your body without a joint is in your throat. • Men’s bones are thicker than women's.

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