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A&P CH16 Respiratory System

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Term
Definition
alveolus   an air sac of a lung; saclike structure  
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bronchial tree   the bronchi and their branches that carry air from the trachea to the alveoli if the lungs  
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carbaminohemoglobin   compound formed by the union of carbon dioxide and hemoglobin  
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carbonic anhydrase   enzyme that catalyzes the reactions between carbon dioxide and water to form carbonic acid  
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cellular respiration   cellular process that releases energy from organic compounds  
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expiration   expulsion of air from the lungs  
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glottis   slit like opening between the true vocal folds or vocal cords  
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hemoglobin   pigment of red blood cells that transports oxygen  
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hyperventilation   abnormally deep and prolonged breathing  
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inspiration   breathing in; inhalation  
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oxyhemoglobin   compound formed when oxygen combines with hemoglobin  
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partial pressure   the pressure one gas produces in a mixture of gases  
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pleural cavity   potential space between pleural membranes  
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respiratory capacities   value obtained by adding two or more respiratory volumes  
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respiratory center   portion of the brainstem that controls breathing depth and rate  
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respiratory membrane   membrane composed of a capillary wall and an alveolar wall through  
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respiratory volume   different intensities in breathing move different volumes of air in or out of the lungs; four distinct types: tidal volume, inspiratory reserve volume, expiratory reserve volume, and residual volume  
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surfactant   substance produced by the lungs that reduces the surface tension within the alveoli  
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