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19) Respiratory System

19) Respiratory System - Respiratory system introduction...

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Respiratory System -function -provide oxygen -remove carbon dioxide -requires circulatory system -respiratory tract -conducts air in/out of body -deliver air to sites of exchange -conditions air -protects against infection -odor detection -pH regulation -sound production Respiratory system - introduction
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Respiratory tract -upper tract -nasal/oral cavity -larynx -trachea -primary (main) bronchi -lower tract (lungs) -bronchi -bronchioles -respiratory bronchioles -alveolar ducts -alveoli Respiratory system - respiratory tract Conducting portion Gas exchange portion
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Lungs asymmetric -right side = 3 lobes -upper, lower, medial -left side = 2 lobes (heart) -upper, lower -gas exchange in alveoli Respiratory system - lungs
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Nasal cavity -Pharynx -mouth -nose -lined respiratory epithelium -functions -admits air -filters air -hair -mucous -moisturizes air -warms air -immune function -IgA IgE -olfaction (smell) -olfactory epithelium Respiratory system - upper tract
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Respiratory epithelium -ciliated pseudo-stratified epithelium -functional collaboration -mucous cells -trap particles -ciliated cells -move mucous Respiratory system - nasal cavity
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Olfactory epithelium -specialized epithelium
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