Across
- 2. Small airways in the lungs that branch from the bronchi
- 6. The two upper chambers of the heart that receive blood
- 7. Receptors that detect changes in blood oxygen, carbon dioxide, or pH
- 8. A protein in red blood cells that carries oxygen
- 10. An obstructive respiratory condition causing inflammation and narrowing of the airways
- 13. A blood vessel that carries blood back to the heart
- 14. A test used to measure lung volumes and airflow
- 17. The largest artery that carries oxygenated blood from the heart to the body
- 18. Tiny air sacs in the lungs where gas exchange takes place
- 19. The phase of the cardiac cycle when the heart contracts
Down
- 1. Relating to the valves between the atria and ventricles
- 3. The movement of particles from a high to a low concentration
- 4. A recording of the electrical activity of the heart
- 5. The part of the brain that controls breathing and heart rate
- 9. A blood vessel that carries blood away from the heart
- 11. Tiny blood vessels where exchange of gases and nutrients occurs
- 12. Specialised fibres that rapidly conduct electrical impulses through the ventricles
- 15. The windpipe that carries air to and from the lungs
- 16. A dome-shaped muscle that helps breathing by changing chest volume