Respiratory System

4. tiny blood vessels that surround the alveoli
6. this gas is needed by the cells of the body for their proper function
7. infection that causes the mucous membranes lining the bronchi to become inflamed
9. set of organs that supply the body with oxygen and rid the body of carbon dioxide
11. two tubes that branch from the trachea, one to each lung
13. during inhalation, the chest cavity ___________________ in size
14. tube in the throat that takes air to the lungs
15. during exhalation, the chest cavity _________________ in size
16. disorder in which the respiratory passageways narrow until air can barely pass through

1. narrow, branching tubes in the lungs that lead to the alveoli
2. tiny air sacs in the lungs where gases are exchanged
3. this gas is a waste product of cells and is removed from the body during exhalation
5. two large organs that supply the body with oxygen and rid the body of carbon dioxide
8. air enters the body through these two structures
10. flap of tissue that covers the trachea to prevent food from entering
12. a dome, shaped muscle that lies below the lungs which is responsible for inhalation and exhalation