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steel girders and reinforced concrete of the body; form internal framework that supports and anchors all soft organs; bones in legs act as pillars; rib cage support thoracic wall


protect soft body organs, ex- skull protects brain; vertebrae surround spinal chord; rib cage helps protect vital organs of the thorax


one vital part of the movement process together with muscles and tendons; bones are whats being pulled by muscles and tendons are what connects the two; if there were no muscles, we would fall to the ground; if there were no bones; we would just lay there and contract


bone serves as a storehouse for minerals (most importantly calcium and phosphorus); calcium is important for sending signals from the blood stream, telling muscles to contract, and blood to clot;

Blood Cell Formation

hematopoiesis occurs within the marrow cavities of certain bones

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