RESPIRATORY SYSTEM4/25/19

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DO NOW‣ Describe the roles of the pulmonary artery

and the pulmonary vein

‣ Study for heart quiz

QUIZ‣ You have 7 min

‣ If you’re done, flip it over and wait quietly

RESPIRATORY SYSTEM

CORNELL NOTES (PAGE 139)

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BLOOD VESSELS‣ Arteries, veins

‣ Capillaries - smallest vessels (as thick as one red blood cell)

‣ Allows diffusion of gases, nutrients, and wastes

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RESPIRATORY SYSTEM‣ Role: Gas exchange (oxygen in, carbon

dioxide out)

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MAJOR ORGANS

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1. NOSE/NASAL CAVITY‣ Air entry/exit

‣ Warms and moistens air

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2. MOUTH‣ Air entry/exit

7. PHARYNX‣ Directs air to larynx

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3. LARYNX‣ Contains vocal chords

‣ Epiglottis (attached to larynx) prevents food from entering windpipe

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8. TRACHEA‣ “Windpipe”

‣ Directs air to lungs

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4. LUNGS‣ Gas exchange

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5/9. RIGHT & LEFT BRONCHUS ‣ Directs air from trachea to reach both lungs

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10. BRONCHIOLE ‣ Smaller branches of bronchus

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11. ALVEOLUS‣ Little air sacs

‣ Where gas exchange occurs

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6. DIAPHRAGM ‣ Muscle that allows lungs to expand

‣ Contraction of diaphragm -> negative pressure in lungs -> air flows in

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BRONCHOSCOPY

▸ https://www.youtube.com/watch?v=KqZc1JqArco

▸

LUNG DISSECTION

▸ https://www.youtube.com/watch?v=9xhxALk9gm8

▸

SMOKER LUNG VS. NONSMOKER LUNG

▸ https://www.youtube.com/watch?v=6wsXee9SZ04

▸

HOW DOES ASTHMA WORK?

▸ https://www.youtube.com/watch?v=PzfLDi-sL3w

▸

WRITTEN SUMMARYPAGE 138 ALL CONCEPTS SUMMARIZED

HOMEWORKRESPIRATORY SYSTEM WORKSHEET