Circulatory and Respiratory System
Across
- 5. pockets in lungs where gas exchange happens
- 6. the movement of muscles in respiratory system
- 8. your blood is carried around the body by this organ
- 10. a pale yellow liquid in your blood
- 13. a substance that an organism needs to stay healthy
- 14. substance that traps oxygen
- 15. a thick liquid in your nose
- 16. other word for breathing out
Down
- 1. largest tube in respiratory system
- 2. this type of blood protects your body from infections
- 3. a process where particles move from a place with many particles to fewer particles
- 4. a waste product of respiration which your lungs excrete
- 7. other word for breathing in
- 9. the main organ of circulatory system
- 10. microorganisms that cause disease
- 11. plants have holes on their leaves
- 12. organ that allow oxygen into the blood