Science test chapter 16

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Across
  1. 4. a collection of organs whose primary function is to take in oxygen and expel carbon dioxide
  2. 6. any of the tiny air sacs of the lungs where oxygen and carbon dioxide exchange
  3. 7. blood vessel that allows an exchange between blood and cell in tissue
  4. 10. the flow of blood from the heart to all parts of the body and back to the heart
  5. 11. the tube that connects the larynx to the lungs
  6. 13. a a collection of organs that transport blood throughout the body
  7. 15. one of the two tubes that connect the lungs with the trachea
Down
  1. 1. the force that blood exerts on the walls of the arteries
  2. 2. a blood vessel that carries bloood away from the heart to the body's organs
  3. 3. the passage from the mouth to the larynx and esophagus
  4. 5. the flow of blood from the heart to the lungs and back to the heart through the pulmonary arteries, capillaries, and the veins
  5. 8. the area of the throat that contains the vocal cords and produces vocal sounds
  6. 9. in biology, a vessel that carries blood to the heart
  7. 12. the fluid that carries gases, nutrients, and wastes through the body and that is made up of platelets, white blood cells, red blood cells, and plasma
  8. 14. in biology, the exchange of oxygen and carbon dioxide between living cells and their environment; includes breathing and cellular respiration