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# Human Organ Systems ## Skeletal System - Gives the body support - Protects the internal organs - Makes body movements possible - Produce blood cells - adults - have 206 named bones ### Axial Skeleton - Forms the vertical, central axis of the body - The bones that serve to protect the brain, spi...

# Human Organ Systems ## Skeletal System - Gives the body support - Protects the internal organs - Makes body movements possible - Produce blood cells - adults - have 206 named bones ### Axial Skeleton - Forms the vertical, central axis of the body - The bones that serve to protect the brain, spinal cord, heart, and lungs - **skull** - protects the brain - **rib cage** - protects the heart - **vertebral column** - protects the spinal cord ### Appendicular Skeleton - includes all bones of the upper and lower limbs - plus the bones of the pectoral and pelvic girdles that attach each limb to the axial skeleton The image shows the human skeleton with labels for each bone. The image shows the bones of the axial skeleton and the appendicular skeleton.