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29 Cards in this Set
- Front
- Back
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gas exchange between blood and tissue cells |
internal respiration |
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substance which reduces surface tension in the alveoli |
surfactant |
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amount of air that can be evacuated from the lungs after a tidal expiration |
expiratory reserve volume |
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passageway posterior to the mouth; passageway for food and air |
oropharynx |
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Diffusion of oxygen and carbon dioxide from blood to the tissue cells is a result of differences in _______ gradients. |
pressure gradients |
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switching mechanism that covers the larynx during swallowing so food does not enter the trachea |
epiglottis |
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total amount of exchangeable air |
vital capacity |
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sacs where the bulk of gas exchange occurs |
aveoli |
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passageway posterior to the nasal passages |
nasopharynx |
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amount of air that can be forcibly inspired beyond tidal volume |
inspiratory reserve volume |
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actual site of gas exchange; _________ zone |
respiratory zone |
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structure located between larynx and bronchi; lined with ciliated cells |
trachea |
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the name of the serous membrane cavity surrounding a lung |
pleural |
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type of immune system cell found in the alveoli |
marcophage |
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moving air in and out of the lungs |
ventilation |
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structure which enters a lung at the hilus |
primary bronchus |
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Quiet expiration is a passive process that just depends on the natural ________ of the lungs. |
elasticity |
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Poor ventilation causes pulmonary capillaries in that area of the lungs to ________. |
constrict |
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Good ventilation causes pulmonary capillaries in that area of the lungs to ________. |
dilate |
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superior to larynx |
laryngopharynx |
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gas exchange between blood and alveoli |
external respiration |
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The pressure in the pleural cavity is said to be ________ relative to both the intrapulmonary and atmospheric pressures. |
negative |
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moistens, warms, filters, and cleanses air; resonating chamber, houses olfactory receptors |
nose |
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Inspiration depends on the action of the _________ muscle. |
diaphragm |
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dead air space; _______ zone |
conducting |
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amount of air that moves into and out of the lungs with each breath during normal quiet breathing |
tidal volume |
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voice box; also provides an open airway |
larynx |
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In order to have good gas exchange in the lungs, the body has mechanisms to match ventilation with ________. |
perfusion |
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prevents food from entering nasopharynx during swallowing |
uvula |
