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chapter 22 sec 2

skeletal system the organ system whose primary function is to support and protect the body and allow the body to move.
protection your heart and lungs are protected by ribs, your spinal cord is protected by your vertebrae. Your brain is protcted by the skull.
storage bones store minerals that help your nerves and muscles function properly. Long bones store fat that can be used for energy.
movement skeletal muscles pull on bones to produce movement . Without bones you would not be able to sit, stand, walk or run.
Blood cell formation me of your bones are filled with a special material that makes blood cells. This material is called marrow.
cartilage a flexible tissue.
red marrow a soft tissue in bones. produces both red and white blood cells
yellow marrow found in the central cavity of long bones and stores fat.
osteoblasts minerls that are deposited by living cells.
compact bone bone tissue without any visible open spaces.
joint a place where two or more bones meet.
Osteoporosis a disease that causes bones to become less dense. Bones become week and break more easily.
arthritis a disease that effects the joints. joints swell and stiffen.
Created by: harty