Chapter 12 - Medical Terminology Chapter 12 The Respiratory...

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Medical Terminology Chapter 12 The Respiratory System
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External Respiration Oxygen is inhaled into the air spaces of the lungs and immediately passes into tiny capillary blood vessels surrounding the air spaces Simultaneously, Carbon Dioxide, passes into the air spaces to be exhaled
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Internal (Cellular) Respiration Oxygen passes out of the bloodstream into the tissue cells Carbon Dioxide passes from tissue cells into the bloodstream to travel to the lungs for exhalation
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Inhalation
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Exhalation
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Cilia
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Cilia Fine hairs lining the respiratory tract to help filter out foreign bodies
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Paranasal Sinuses
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Pharynx Nasopharynx Oropharynx Laryngopharynx
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Nasopharynx
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Nasopharynx Adenoids
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Adenoids
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Oropharynx Tonsils
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Laryngopharynx Larynx or voice box Contains the vocal cords Surrounded by cartilage for support
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Larynx
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Epiglottis
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Epiglottis Flap of cartilage that folds over the larynx while swallowing to prevent food and liquids from going down the trachea
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Pleura
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Pleura Parietal pleura—serous membrane lining the chest cavity Visceral pleura—membrane covering the lung
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Lobes Divisions of the lung Right lung has 3 lobes Left lung has 2 lobes
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Chapter 12 - Medical Terminology Chapter 12 The Respiratory...

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