ANAT 2626 Pharynx and Esophagus (Mercy Navis)

ANAT 2626 Pharynx and Esophagus (Mercy Navis) - 1 Chapter #...

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1 Chapter # 7 Pharynx 1. is the superior part of the alimentary system 2. lies posterior to the nasal and oral cavities 3. extends from the cranial base, to the inferior border of cricoid cartilage ( anteriorly ) and inferior border of C6 posteriorly 4. its posterior wall lies against the prevetebral layer of deep cervical fascia 5. inferiorly it is continuous with the esophagus Interior of the pharynx is divided into three parts 1. nasopharynx, lies posterior to the nose and superior to the soft palate 2. oropharynx, lies posterior to the mouth 3. laryngopharynx, lies posterior to the larynx Nasopharynx has a respiratory function Features in the nasopharynx 1. opening of the auditory / pharyngotympanic tube 2. pharyngeal recess, is a slitlike lateral projection posterior to the salpnigopahryngeal fold 3. pharyngeal tonsil, is an aggeagated lymphoid tissue, in the pharyngeal recess, referred to adenoids - Waldeyer’s ring 4. salpingopharyngeal fold, is a vertical fold of mucous membrane extending inferiorly from the medial end of the auditory tube 5. salpingopharyngeaus muscle covers the salpingopharyngeal fold, which opens the pharyngeal oriFce of the pharyngotympanic tube during swallowing 6. tubal tonsil, is a collection of lymphoid tissue near the pharyngeal oriFce of the auditory tube Oropharynx has a digestive function, bounded superiorly by the soft palate and inferiorly by the base of the tongue Features in the oropharynx 1. palatoglossal arch / fold , is a mucous fold extends from the soft palate to the tongue 2. palatopharyngeal arch / fold , extends from the soft palate to the superior border of epiglottis 3. palatine tonsils is a collection of lymphoid tissue between the palatoglossal and palatopharyngeal arches 4. tonsillar bed, is formed by the superior constrictor of the pharynx muscle and the pharyngobasilar fascia Laryngopharyx ( hypopharynx ) 1. lies posterior to the larynx 2. extending from the superior border of the epiglottis to the inferior border of cricoid cartilage 3. it narrows and becomes continuous with the esophagus Features in the laryngopharynx 1. middle and inferior constrictors of pharynx, form the posterior and lateral walls
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This note was uploaded on 11/22/2011 for the course ANAT 2626 taught by Professor Ronaldg.mayne during the Winter '11 term at Life Chiropractic College West.

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ANAT 2626 Pharynx and Esophagus (Mercy Navis) - 1 Chapter #...

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