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Notes - The Respiratory system The major function of the respiratory system is to supply the body with __________ and dispose of ___________________ Respiratory Anatomy I. The Respiratory system consists of 2 parts. Give the structures in and function of each A. respiratory zone (organs): B. conducting zone (passageways): II. Nose A. List the 5 functions of the nose 1. 2. 3. 4. 5. B. Explain why you can get a runny nose on a cold day. C. What is the function of the conchae? D. What separates the nasal cavity from the oral cavity? E. What are the 3 functions of the paranasal sinuses? 1. 2. 3. 1 III. Pharynx A. The pharynx serves as a common passageway for ________ and _________. B. The nasopharynx serves only as a passageway for ________________ . When you swallow, the _______________________ & ____________________ rise upward to prevent food/fluid from entering it. The oropharynx & the laryngopharynx carry ________________, _____________ & _________. Food will be directed posteriorly to the ____________________ while air goes _____________________ to the larynx. C. List the 3 sets of tonsils. IV. Larynx A. The 3 functions of the larynx are 1. 2. 3. B. Your epiglottis is the ______ tracheal cartilage. When air is flowing into the _________, the free edge projects ___________________. During swallowing, the ________________ is pulled upward and the ________________is tipped__________________________________ to cover the laryngeal inlet to route _______________________ into the ______________________. C. A cough reflex is initiated if _____________________________________________ enters the larynx. This reflex does not work while we are unconscious so it is not a good idea to______________________________________________________________. V. Trachea A. What is the function of the ciliated mucosa in the trachea? B. Smoking diminishes _________________________________ so coughing is the only means of preventing mucus accumulation in the lungs. Smokers should never be given _________________________________________________. 2 C. The tracheal wall is reinforced internally by _____________________________ so that it is flexible (open part of C) but does not collapse (closed part of C) D. Purpose of the Heimlich maneuver: E. Define tracheostomy: VI. Primary Bronchi Which bronchi do inhaled foreign objects usually lodge in and why? VII. Lungs A. The two lungs are different in shape and size. The left lung has only ______ lobes to give heart some room while the right lung has _______ lobes. B. The lungs weigh about _________________. C. The _________________ pleura line the thoracic cavity wall while the __________pleura line the external lung surface. D. The function of the pleural/serous fluid (in pleural cavity) is to 1. 2. VIII. Respiratory zone structures A. The respiratory zone is the only site of ______________________. B. The alveolar walls are composed of a single layer of_______________________ that is much thinner than a ____________________________. The respiratory membrane has ___________ on one side and ___________________ on the other side. C. Gas exchanges occur through the process of ___________________________. The approximate surface area available for a healthy person is __________ square meters. D. Efficient gas exchange requires a moist membrane so ___________________ cells secrete a __________________________________ that coats the membrane. 3 End of Quiz #1 - Know your diagrams also 4