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Chapter 17
Respiratory System
| Term | Definition |
|---|---|
| alveolus | air sac in the lungs |
| bronchi | the two main branches leading form the trachea to the lungs that serve as passageways for air |
| bronchioles | one of the smaller subdivisions of the bronchial tubes |
| epiglottis | the uppermost cartilage of the larynx; closes during swallowing to direct food and liquids into the esophagus |
| glottis | the opening between the vocal cords |
| intrapleural pressure | the pressure between the visceral and parietal pleurae, which assists with lung expansion |
| larynx | structure made of cartilage and muscle at the upper end ot the trachea; part of the airway and the vocal apparatus |
| palate | bony structure separating the mouth from the nasal cavity |
| partial pressure | the contribution of a single gas in a mixture of gases toward the total pressure of the gas mixture |
| pharynx | muscular tube behind the oral and nasal cavities; commonly called the throat |
| pleura | serous membrane covering the lungs and the thoracic cavity |
| surfactant | lipoportein secreted by alveolar cells that decreases surface tension of the fluid lining the alveoli, permitting expansion of alveoli |
| tidal volume | the amount of air inhaled and exhaled during quiet breathing |
| trachea | portion of the respiratory tract that carries air through the neck and upper chest |
| ventilation | the movement of air into and out of the lungs |
| vital capacity | the amount of air that can be inhaled and exhaled with the deepest possible breath |
Created by:
lindstromjPN110
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