role of oropharynx and hypopharynx in sleep apnea
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The upper airway at the level of the nasopharynx, oropharynx and hypopharynx is normal in size and contour. Abnormal airway during sleep. Multiple sites of obstruction often occur in patients with obstructive sleep apnea. ... Patients with a small or receding jaw are at increased risk for obstruction.
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The hypopharynx extends from the hyoid bone superiorly to the cricoid cartilage inferiorly. It is the most inferior of the anatomic subdivisions of the pharynx, beginning at the inferior border of the oropharynx and eventually connecting with the cervical esophagus at the cricopharyngeal muscle
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