Organ System

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Across
  1. 1. Keeps body fluid levels in balance and defends the body against infections.
  2. 4. Breakdown of food substances into simpler forms that can be absorbed
  3. 8. Transports materials throughout the body
  4. 10. moves oxygen throughout the body and clean out waste gases like carbon dioxide to help you breathe.
  5. 11. support, movement, protection, and production of blood cells
Down
  1. 2. protect underlying tissues and regulate body temperature
  2. 3. Produce special reproductive cells for reproduction
  3. 5. removes wastes from the blood and helps maintain the body's water and electrolyte
  4. 6. secretion of hormones, communication between body parts
  5. 7. Movement, maintenance of posture, production of body heat
  6. 9. Communication throughout body, mental activities, maintaining homeostasis