1. respiration begins with 2. gas exchange is needed to provide cells with the they need for cellular respiration. 3. tiny air sacs in the lungs are known as 4. inhaling is an active movement that results from the contraction of a muscle called the 5. asthma is a disease in which the air passages of the become narrow, often with excessive mucus production. 6. the is also known as the wind pipe. 7. emphysema is usually caused by and is irreversible. 8. the is also known as the voice box. 9. the pumps oxygen-rich blood into arteries. 10. gas exchange is the exchange of gases between inhaled air and the blood. 11. is a disease in which some of the alveoli of the lungs fill with fluid so gas exchange cannot occur. 12. oxygen from the peripheral capillaries into body cells.