Chapter 16 Vocabulary Respiration & Circulation

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Across
  1. 4. movement of blood through vessels to and from the lungs
  2. 8. two tubes that branch off of the trachea and lead to the lungs
  3. 9. movement of air into and out of the lungs
  4. 11. microscopic sacs within the lungs where gas exchange occurs
  5. 12. large muscle below the lungs that contracts and relaxes as you breathe
  6. 14. movement of blood through vessels to and from the heart and body
  7. 16. movement of blood through vessels that supply blood to all the cells of the heart
Down
  1. 1. buildup of fatty material within the walls of arteries
  2. 2. one of the two lower chambers of the heart through which blood exits
  3. 3. vessel that carries blood toward the heart
  4. 4. tubelike passageway at the top of the throat that receives air, food, and liquids from the mouth or nose
  5. 5. tiny blood vessels that deliver supplies to individual cells and take away waste materials
  6. 6. triangle-shaped area connected to the pharynx; voice box
  7. 7. tube connected to the larynx and held open by C-shaped rings of cartilage
  8. 10. one of the two upper chambers of the heart through which blood enters
  9. 13. large vessel that takes blood away from the heart
  10. 15. main organs of the respiratory system