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Chapter 22: Lecture 1 (Structures of the Lower Respiratory System (larynx,…
Chapter 22: Lecture 1
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Structures of the Upper Respiratory System, Sinuses and Ears
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filters dust, pollen, microorganisms and other contaminants from the air and delivers it to the lower respiratory system
components of the URS
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nasal cavity
lined with cilia, filters the air, moves mucous
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defensins fight against G+ and G- bacteria, fungi and some viruses
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