CROSSWORD

6. - Carry oxygenated blood away from the heart. mo
8. CILIA - Tiny hair-like structures in the nasal cavity that help filter and move mucus.
9. - Return deoxygenated blood to the heart.
10. - A muscle that aids in breathing by contracting and relaxing.
12. - Pump blood throughout the circulatory system.Pump blood throughout the circulatory system.
14. - The voice box; involved in sound production.
15. - Tiny air sacs in the lungs where gas exchange occurs.
19. - Liquid part of blood that carries nutrients and waste products.
21. -The process of gas exchange between an organism and its environment.
23. - Prevents backflow of blood in the heart.
25. - The process of providing oxygen to the body or a body part.
26. The thin membrane surrounding the lungs and lining the chest cavity.

1. - Muscles located between the ribs that assist in breathing.
2. - The movement of blood through the body.
3. - Windpipe; carries air to and from the lungs.
4. - Tiny blood vessels where gas exchange occurs.
5. - Contains cells and plasma, carrying nutrients and waste.
7. Blood Cell - Transport oxygen throughout the body.
11. - Protein in red blood cells that carries oxygen.
13. - The main and largest artery in the body.
16. DIOXIDE -A waste gas produced by the body's cells, transported in the blood to the lungs for exhalation.
17. Blood Cell - Part of the immune system, defends against infections.
18. - Relating to the lungs.
20. One of the two main branches of the trachea, leading to the lungs.
22. - Helps in blood clotting to stop bleeding.
24. - Lower chambers of the heart.