Across
- 2. What tiny air sacs in the lungs are adapted for gas exchange?
- 3. What is the liquid part of blood that transports nutrients and waste?
- 7. What is the main artery that carries oxygenated blood from the heart?
- 8. What blood vessel carries oxygenated blood from the lungs to the heart? (9, 4)
- 9. What type of blood vessel carries blood back to the heart?
- 12. What part of the heart controls the resting heart rate?
- 14. What blood vessels supply oxygenated blood to the heart muscle? (8,8)
- 17. What protein in red blood cells binds to oxygen?
- 18. What is a small mesh tube used to widen arteries affected by coronary heart disease?
Down
- 1. What condition is caused by fatty deposits building up in the coronary arteries? (8,5,7)
- 4. What are the smallest blood vessels where gas exchange occurs?
- 5. What structure in the heart and veins prevents the backflow of blood?
- 6. What cells transport oxygen around the body? (3,5,5)
- 10. What large vein carries deoxygenated blood back to the heart? (4,4)
- 11. What type of blood vessel carries blood away from the heart?
- 13. What small cell fragments help blood to clot?
- 15. What gas is transported by red blood cells and needed for respiration?
- 16. What type of drugs help lower cholesterol and reduce the risk of heart disease?