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Ch.12 Vocab resp
Vocabulary ch.12 Respiratory System
| Vocabulary | Meaning |
|---|---|
| adenoids | collection of lymph tissue in the nasopharynx; also called pharyngeal tonsils |
| alveolus | air sac in the lung |
| apex of the lung | uppermost portion of the lung |
| base of the lung | lower portion of the lung |
| bronchioles | smallest branches of the bronchi |
| bronchus | branch of the trachea that is a passageway into the air spaces of the lung; bronchial tube |
| carbon dioxide | a gas produced by body cells when oxygen and food combine; exhaled through the lungs |
| cilia | thin hairs attached to the mucous membrane epithelium lining the respiratory tract |
| diaphragm | muscles separating the chest and abdomen. most important muscle for breathing |
| epiglottis | lid-like piece of cartilage that covers the larynx, preventing food from entering the larynx and trachea during swallowing |
| exipration | breathing out |
| glottis | opening to the larynx |
| hilum (of lung) | midline region where the bronchi, blood vessels, and nerves enter and exit the lungs |
| inspiration | breathing in |
| larynx | voice box |
| lobe | division of a lung |
| mediastinum | region between the lungs in the chest cavity, contains trachea, heart, aorta, esophagus, bronchial tubes |
| oxygen | gas that passes into the bloodstream at the lungs and travels to all body cells |
| palatine tonsil | one of a pair of almond-shapes masses of lymphoid tissue in the oropharynx |
| paranasal sinus | one of the air cavities in the bones near the nose |
| parietal pleura | the outer fold of pleura lying closest to the ribs and wall of the thoracic cavity |
| pharynx | throat, composed of the nasopharynx and laryngopharynx |
| pleura | double-folded membrane surrounding each lunch |
| pleural cavity | space between the folds of the pleura |
| pulmonary parenchyma | the essential cells of the lung, those performing its main function; the air sacs and small bronchioles |
| trachea | windpipe |
| visceral pleura | the inner fold of pleura lying closest to the lung tissue |