🦴 SKELETAL & MUSCULAR SYSTEM
PAGE 1 OF 5 · LIVING SCAFFOLD
FRAME
MORE THAN A HANGER
Your skeleton holds you up, protects soft organs, anchors muscles, and stores minerals. A typical adult has about 206 named bones — the exact count can vary slightly, but that is the textbook number. Ribs guard heart and lungs; the skull encases the brain; long bones in arms and legs act as levers. Without this frame, you would be a puddle.
⚡ STRENGTH FACT
Ounce for ounce, healthy bone is stronger than many steels in tension — nature engineered hollow tubes to stay light and tough.
BONES!
270 → 206
👶 Many separate centres fuse as you grow.
🧒 Growth plates add length until they close in late teens for most people.
🧒 Growth plates add length until they close in late teens for most people.
MINERAL BANK
🦴 Stores calcium and phosphate for the whole body.
🔄 bone tissue constantly remodels — break-down and build-up together.
🔄 bone tissue constantly remodels — break-down and build-up together.