Respitory System

6. a deficiency of oxygen reaching the tissues of the body.
9. the act of drawing in air.
10. a small air-containing compartment of the lungs in which the bronchioles terminate and from which respiratory gases are exchanged with the pulmonary capillaries.
11. Controlling your breathing.

1. a thin plate of flexible cartilage in front of the glottis that folds back over and protects the glottis during swallowing.
2. the main trunk of the system of tubes by which air passes to and from the lungs in vertebrates.
3. either of the two primary divisions of the trachea that lead respectively into the right and the left lung.
4. the muscular tubular passage of the vertebrate digestive and respiratory tracts extending from the back of the nasal cavity and mouth to the esophagus.
5. the modified upper part of the trachea of air-breathing vertebrates that in humans, most other mammals, and some amphibians and reptiles contains the vocal cords.
7. the act of pushing out air.
8. normal respiration.
12. the pair of openings of the nose or nasal cavity.