Respiratory System Unit Vocab

Tubelike passageway for both food and air through which inhaled air passes after it is warmed and moistened in the nasal cavity. (ch. 21, p. 577)

Airway to which the vocal chords are attached. (ch. 21, p. 577)

Tube with rings of cartilage to keep it open & prevent it from collapsing; is lined with mucous and cilia to trap dust, bacteria and pollen.

Two short branches at the lower end of the trachea that carry air into the lungs. (ch. 21, p. 578)

In the lungs, the tiny, thin-walled sacs arranged in grapelike clusters at the end of each bronchiole; oxygen and carbon dioxide exchange takes place between the alveoli and capillaries. (ch. 21, p. 578)

Muscle beneath the lungs that contracts and relaxes with breathing and that helps move air in and out of the body. (ch. 21, p. 579)

Long-lasting respiratory disease in which the bronchial tubes are irritated and too much mucus is produced. (ch. 21, p. 581)

Respiratory disease in which the alveoli in the lungs lose their ability to expand and contract. (ch. 21, p. 582)

Lung disorder in which there may be shortness of breath, wheezing, or coughing and that may occur as an allergic reaction. (ch. 21, p. 583)

Microscopic blood vessel that connects arteries and veins; nutrients, oxygen, waste materials, and carbon dioxide diffuse through its walls.

Process whereby fresh air moves into and stale air moves out of the lungs

The chemical reaction in which oxygen from the air we breathe is combined with the glucose from the food we eat to produce energy, carbon dioxide, and water vapor

Small flap of tissue that normally closes over the tracheal opening when food is swallowed; prevents food and liquid from entering the larynx

The bronchi branch into these smaller and smaller tubes. At the end of these tubes are clusters of tiny, thin-walled sacs.

Major cause is smoking;leading type of cancer deaths