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