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Respiratory System (Primary Bronchi (enters the lung at hilus, right…
Respiratory System
Primary Bronchi
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right bronchus is wider, shorter, and straighter than the left, due to the presence of the heart on the left side
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Lungs
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each lung is divided into lobes by fissure (2 on left, 3 on right)
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Trachea (Windpipe)
fairly rigid because of the C-shaped rings made of hyaline cartilage to keep airway open at all times
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Nose
air enters nose through external nares(nostrils),
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Pulmonary Ventilation
before inspiration, pressure in lungs PL=pressure of atmosphere PA=760mm Hg
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Asthma
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response o irritations with dyspnea, coughing and wheezing
Paranasal Sinuses
cavities within bones
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frontal, sphenoid ethmoid, maxillary bone
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