Human Body Systems Review

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Across
  1. 2. The __________ intestines absorb nutrients into the villi and diffuse them into the bloodstream
  2. 4. Type of digestion that uses acids or enzymes to break down food
  3. 5. The system that transports impulses from the brain to the body and back
  4. 6. The system that delivers oxygen and nutrients to all body cells and carries wastes away
  5. 9. Type of digestion that physically breaks down food into smaller pieces
  6. 10. All the body systems work together to maintain the internal balance called __________
  7. 11. The process of __________ respiration uses oxygen and glucose to make carbon dioxide, water, and ATP energy for all cell functions
  8. 13. Tiny air sacs in the lungs where diffusion of oxygen and carbon dioxide occurs
  9. 14. The system that protects internal organs and provides a framework for muscles
  10. 15. The tube that connects the mouth to the stomach
  11. 16. A group of cells working together for a specific function
Down
  1. 1. The system that allows movement, pumps blood, and moves food through the digestive system
  2. 3. The system that takes in oxygen and removes carbon dioxide
  3. 7. Type of blood vessel that connects arteries and veins and where diffusion occurs
  4. 8. The system that breaks down food into usable nutrients
  5. 11. Type of muscle found only in the heart
  6. 12. Glucose and __________ are the reactants of cellular respiration
  7. 14. Type of muscle found in the digestive system and blood vessels