Chapter 24 - Respiratory System Functions: 1. surface area...

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Respiratory System Functions: 1. surface area for gas exchange 2. acid-base balance (helps maintain PH balance of blood) 3. warm up and moisten air before it goes into lungs 4. larynx (voice box) Consists of (in order): 1. nose (nasal cavity - 3 concha) 2. pharynx 3. larynx 4. trachea 5. bronchi 6. bronchioles 7. alveoli (lung tissue) Epithelium 1. RESPIRATORY EPITHELIUM -- In respiratory tract -- pseudostratified ciliated columnar epithelium (with goblet cells) -- all over nasal cavity 2. OLFACTORY EPITHELIUM -- where we smell (white nerves on nose model) 3. SIMPLE SQUAMOUS EPITHELIUM -- In lungs (so we can have gas exchange) All Hyaline cartilage Nasal cavity is separated from the oral cavity by a palate (front 2/3 of palate is hard -- PALATINE PROCESSES OF MAXILLA AND PALATINE BONE); (posterior 1/3 is muscular soft palate) All the muscles of palate innervated by VAGAS X; except levator veli palitini (elevates the palate so you can close your nasal cavity) by TRIGEMINAL V
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PHARYNX - starts at soft palate -- divided into 3 parts: 1. Nasopharynx (posterior to nasal cavity; nose) a. entrance to auditory tube b. pharyngeal tonsils (adenoids) - for defense c. palatopharyngeal arch (muscle) -- McDonald Arches -- fold starting at palate -- most posterior arch (palatoglossal most anterior arch connecting to tongue) i. boundary between nasal pharynx and oral pharynx 2. Oropharynx (posterior to the oral cavity) -- from palatopharyngeal arch to
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This note was uploaded on 02/01/2011 for the course ANAT 1 taught by Professor Dell during the Fall '10 term at Santa Monica.

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Chapter 24 - Respiratory System Functions: 1. surface area...

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