Human Body System Crossword

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Across
  1. 5. This system is responsible for getting rid of waste in the body. It primarily consists of the bladder and kidneys.
  2. 6. This system provides oxygen to the rest of the body.
  3. 8. Where does digestion begin?
Down
  1. 1. This system is responsible for pumping blood.
  2. 2. This system is composed of cells and muscle fibers.
  3. 3. This system uses specialized cells to send signals all over your body.
  4. 4. This system is responsible for breaking down food.
  5. 7. This system protects your body from harmful substances and germs that make you ill.