Respiration & Circulation

1. Valve - The valve between the right auricle and right ventricle.
3. Blood Cells - Cells in the blood that carry oxygen to the body's tissues.
4. Valve - The valve between the left auricle and left ventricle.
7. Bronchi, Bronchioles - The airways that carry air from the nose and mouth to the lungs.
8. Arteries - Arteries that carry deoxygenated blood from the heart to the lungs.
9. - Alveoli - Tiny air sacs in the lungs where gas exchange occurs.
12. Respiration - The process by which cells produce energy by breaking down glucose.
13. - Tiny blood vessels where gas and nutrient exchange occurs.
14. for Aerobic Respiration - The chemical equation: glucose + oxygen → carbon dioxide + water + energy.
18. - The act of taking air into the lungs.
19. System - The body system that circulates blood and nutrients.
22. - Small blood cells that help with clotting.
23. Auricle - The upper chamber on the right side of the heart.
25. System - The body system responsible for breathing and gas exchange.
26. Ventricle - The lower chamber on the left side of the heart that pumps blood to the body.
28. Auricle - The upper chamber on the left side of the heart.

2. Muscles - Muscles between the ribs that help with breathing.
5. - The liquid part of blood that carries cells and nutrients.
6. Respiration - A type of respiration that doesn't require oxygen.
10. - Flaps in the heart and veins that prevent blood from flowing backward.
11. Veins - Veins that carry oxygenated blood from the lungs to the heart.
15. - Blood vessels that carry blood back to the heart.
16. Respiration - Respiration that uses oxygen to produce energy.
17. - The muscle that helps with breathing by contracting and relaxing.
20. - The act of releasing air from the lungs.
21. - The organ that pumps blood throughout the body.
23. Ventricle - The lower chamber on the right side of the heart that pumps blood to the lungs.
24. - Blood vessels that carry blood away from the heart.
27. Blood Cells - Cells in the blood that fight infections.