Chapter 22_2008_Resp - Outline for Chapter 22: The...

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Outline for Chapter 22:  The Respiratory System I.  INTRODUCTION A.  Function of Respiratory System: Two systems cooperate to supply O 2  and eliminate CO 2 The respiratory system  The cardiovascular system  Failure of either system has the same effect on the body:  B.  Events of Respiration Respiration  Consists of: 1. Pulmonary ventilation  ( breathing ):   2. external    respiration:   3. transport of respiratory gases:   4. Internal  ( tissue/cellular respiration II.  RESPIRATORY SYSTEM ANATOMY The  respiratory system  consists of the nose, pharynx, larynx, trachea, bronchi, and lungs  The  conducting zone   include: nose, pharynx, larynx, trachea, bronchi, bronchiole, and terminal bronchioles  The  respiratory zone  Include:  respiratory bronchioles, alveolar ducts, alveolar sacs, and alveoli. A. The Nose: 1. Functions include: 2.  Structure a. external portion:  external nares   b. bony framework of the nose formed by  c. internal nares       d. nasal cavity divided by nasal septum:   e.  mucosal lining: respiratory mucosa ciliated epithelial cells: olfactory mucosa Conchae :   1
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B. Pharynx: 1. Function   2. Structure Anatomic regions: superior to inferior Nasopharynx:    Oropharynx:   Laryngopharynx :   C. Larynx 1. Function:     connects the laryngopharynx with trachea:   2. Associated Structures:   thyroid cartilage  epiglottis   cricoid  paired arytenoid, corniculate , and cuneiform  cartilages  Superior portion:   Inferior to vocal folds:   3. Voice Production Vocal ligaments:   The  larynx  contains  vocal folds  ( true vocal cords )  Sound originates from  Tensed vocal folds  relaxed vocal folds  D.  Trachea 1. Location:   2. Structure 2
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:   Submucosa :   Adventitia Trachealis muscle:  3. Function :   E. Bronchi The bronchial/respiratory tree consists of the trachea , primary bronchi , secondary bronchi tertiary bronchi , bronchioles , and terminal bronchioles . The trachea divides  Right primary bronchus  Bronchi can be divided  A. Conducting Zone:   Cartilage support structures change:    Bronchi divided into:  conducting zone:  Respiratory zone:  Change in epithelia type:  Increase in smooth muscle as passageway becomes smaller:   As cartilage decreases, smooth muscle increases B. Respiratory Zone:     Respiratory Membrane:   Type I Cells:  Capillaries Membrane:   Type II Cells :    Alveoli:  Features:   1. 2.
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Chapter 22_2008_Resp - Outline for Chapter 22: The...

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