Chapter_3_anatomy_physiology

Chapter_3_anatomy_physiology - ANATOMY PHYSIOLOGY Overview...

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PHYSIOLOGY
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Overview Anatomy of speech production  Respiratory system  Phonatory system  Articulatory system
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Respiratory System  Rib cage  Lungs Trachea  Diaphragm
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Lungs Part of the pulmonary system Include the lower and upper airways Upper airway includes the mouth, nose, and upper  throat Lower airway includes the trachea, which is a tube  formed by 20 rings of cartilage
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Lungs Courtesy of Mike Mahon, University of  Manchester.
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External Intercostals:  Lift ribcage when you  inhale  Internal Intercostals:  Compress ribcage when  you exhale
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Trachea Tube formed by about 20 rings of cartilage Starting point for the lower airway Image from  http://www.sk.lung.ca/education/student/anatomy/trachea.html Courtesy of Gordon Holtslander, Webmaster; Canadian Lung Association.
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Diaphragm Diaphragm:   Thick, dome shaped muscle that  forms the floor of the thoracic (chest) cavity It separates the stomach from the thorax Plays a major role in breathing because the lungs  rest on it
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Phonatory Mechanism The larynx is a valve that: Is the sound producing mechanism for speech Prevents substances from entering the trachea
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Laryngeal Structures Hyoid bone Cartilages: Thyroid Cricoid Arytenoid Muscles: Lateral cricoarytenoid Interarytenoid Posterior cricoarytenoid Cricothyroid
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Hyoid Bone U-shaped bone that suspends larynx U-shaped hyoid bone floats under the jaw, but is not  an integral part of the larynx
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Thyroid Cartilage Forms front and side walls of larynx Large, butterfly shape Illustration from  http://faculty.roosevelt.edu/ar mstrong/journey/larynx.html Courtesy of Eric Armstrong .
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Cricoid Cartilage Top ring of  trachea.  Linked to thyroid and to a pair of  arytenoid cartilages Cricoartenoid joint:  Permits circular and sliding  movements
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Cricoarytenoid Joint The arytenoids are connected to the cricoid through  the cricoarytenoid joint Cricoarytenoid joint permits circular and sliding  movements
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This note was uploaded on 04/06/2011 for the course COMD 2081 taught by Professor Domma during the Spring '08 term at LSU.

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Chapter_3_anatomy_physiology - ANATOMY PHYSIOLOGY Overview...

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