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Chabner Ch12 Vocabul
Respiratory System - Vocabulary
| Question | Answer |
|---|---|
| adenoids | lymphatic tissue in the nasopharynx; pharyngeal tonsils. |
| alveolus pl-alveoli | air sac in lung. |
| apex of the lung | tip or uppermost portion of the lung. an apex is the tip of a structure. apical means pertaining to (at) the apex. |
| base of the lung | lower portion of the lung; from the Greek basis, foundation. basilar means pertaining to the base. |
| bronchioles | smallest branches of the bronchi. terminal bronchioles leans to alveolar ducts. |
| bronchus pl-bronchi | branch of the trachea (windpipe) that is a passageway into the lung; bronchial tube. |
| carbon dioxide (CO2) | gas produced by body cells when oxygen and food combine; exhales through the lungs. |
| cilia | thin hairs attached to the mucous epithelium lining the respiratory tract. they clear bacteria and foreign substances from the lung. Cigarette smoke impairs the function of cilia. |
| diaphragm | muscle separating the chest and abdomen. it contracts and relaxes to make breathing possible. |
| epiglottis | lid-like piece of cartilage that covers the larynx, preventing food from entering the larynx and trachea during swallowing. |
| expiration | breathing out (exhalation) |
| glottis | slit-like opening to the larynx. |
| hilum (of lung) | midline region where the bronchi, blood |
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