Respiratory System

Respiratory System - The Respiratory System-all organs...

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1 The Respiratory System—all organs involved in moving air from the atmosphere into the lungs ( ) and moving air from the lungs to the atmosphere ( ) Functions of the respiratory system: Filtration-- Warming— Moisturizing— Oxygen is added Carbon dioxide is removed
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2 Nose • Nasal Cavities: 2 narrow canals separated by septum • Empty into nasopharynx (upper portion of pharynx) • Auditory tubes lead from nasopharynx to middle ears – infection of cranial sinuses, develops when nasal congestion blocks openings
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3 • Symptoms: Symptoms: pain, hearing loss, vertigo • Bacterial infection of middle ear caused by movement of pathogens from • Treatment: Treatment: antibiotics, drainage tubes for recurring cases Pharynx (throat) Passageway connects nasal and oral cavities to larynx • Tonsils Tonsils = lymphatic tissue where oral cavity meets pharynx • Air and food passage cross in pharynx because common entrance to larynx (air) & esophagus (food)
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4 Tonsillitis • Cause: Cause: inflame if overwhelmed by • Symptoms: Symptoms: sore throat, difficulty swallowing, headache, fever • Treatment: Treatment: antibiotics, tonsillectomy – removal of tonsils (if infections frequent/severe) Larynx (voice box) • Cartilaginous organ in neck • Glottis Glottis = = flap of tissue covering glottis, prevents food from entering larynx • Contains vocal cords vocal cords, folds stretched across glottis How is sound produced? • Air passing through glottis vibrates cords, pitch regulated by changing •Laryngitis Laryngitis – infection causes hoarseness, persistence in absence of other infection is cancer warning sign
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This note was uploaded on 04/17/2008 for the course BIO 1004.212.0 taught by Professor Douglasmerrill during the Winter '07 term at RIT.

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Respiratory System - The Respiratory System-all organs...

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