The Respiratory System

123456789101112131415
Across
  1. 5. what organ in the human body is not important?
  2. 6. Tubes formed by the division of the trachea are called?
  3. 8. A sheet of muscle that separates the chest from the abdomen.
  4. 9. what does the capillaries surround?
  5. 11. What does C02 stand for?
  6. 13. During what do our muscles work at a higher rate?
  7. 14. Wat gender has a lung capacity of 4.2 litres?
  8. 15. What gender has a lung capacity of 6.0 litres?
Down
  1. 1. What is inhaled through the nasal cavity?
  2. 2. What does air go down?
  3. 3. What does oxygen dissolve into?
  4. 4. Our lungs are the size of a?
  5. 7. The system of organs and tissues that takes the air into your body is called the?
  6. 10. What flows through the blood stream?
  7. 12. What is the term used when breathing out?