Respiratory Organs – Flashcards
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Potential space between visceral and parietal pleurae
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Pleural cavity
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Most inferior portion of larynx
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Cricoid cartilage
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Air-filled space in skull bone that opens into nasal cavity
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Sinus (paranasal sinus)
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Microscopic air sac for gas exchange
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alveolus
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Consists of large lobes
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Lung
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Opening between vocal cords
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glottis
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Fold of mucous membrane containing elastic fibers responsible for sounds
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Vocal cord (true)
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Increases surface area of nasal mucous membrane
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Nasal concha
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Passageway for air and food
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Pharynx
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Partially covers opening of larynx during swallowing
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Epiglottis
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Mucus lubricates the respiratory tract and captures unknown particles so it does not get into the lungs
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Function of the mucus secreted by the goblet cells
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The cilia pushes mucus toward the pharynx for swallowing
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Function of the cilia in the respiratory tubes
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How is breathing affected if the smooth muscle of the bronchial tree relaxes?
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More air flow
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How is breathing affected if smooth muscle of the bronchial tree contracts?
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creates a high resistance to air flow during inspiration; less air flow
