Respiratory System

3. A test used to measure lung volume and air flow.
5. A type of cartilage found in the respiratory tract, including the trachea and bronchi.
8. A protein in red blood cells that carries oxygen.
10. The windpipe; a tube that connects the larynx to the bronchi.
12. The volume of air remaining in the lungs after a maximal exhalation.
15. The movement of gases from an area of higher concentration to an area of lower concentration.
16. The voice box, located at the top of the trachea.
17. Tiny air sacs in the lungs where gas exchange occurs.
18. The process of gas exchange between the body and the environment, including inhalation and exhalation.

1. Law which states that pressure and volume of a gas are inversely proportional at constant temperature.
2. Small branches of the bronchi that lead to the alveoli.
4. Muscles located between the ribs that assist with breathing.
6. A double-layered membrane surrounding the lungs and lining the chest cavity.
7. The act of breathing in air into the lungs.
9. The act of breathing out air from the lungs.
11. A dome-shaped muscle that contracts to allow lung expansion during inhalation.
13. A flap of cartilage that covers the trachea during swallowing to prevent food from entering the airway.
14. the amount of air inhaled or exhaled during normal breathing.