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Gives support Protects organs Helps in movement Makes blood (hematopoiesis) Stores minerals (ex: calcium) Inside the bone Outside the bone 2 parts: › Compact Bone Strong Support › Spongy Bone Looks like a sponge Holes contain marrow Marrow makes blood cells Cartilage › Flexible › Cushions joints › Reduces friction because it is slippery Joint: any place in the body where 2 or more bones come together Ligament: strong band of tissue that connects 2 bones together Immovable Movable Joints where the bones DON’T move relative to each other Skull Pelvis (Hips) Hinge: back and forth Ball-and-Socket: bone with round end fits into cup-like bone Pivot: one bone rotates around another Simple fracture Compound fracture Compression fracture Depression fracture Greenstick fracture Bone fracture where bone does not break the skin Bone fracture where bone does break the skin Bone fracture where the bone “squishes” A break in the cranial bone in which the bone depresses inward toward the brain The bone doesn’t break all the way through › Common in young kids https://youtu.be/iPiCqAyBJy4