Function of the Inferior Pharyngeal Constrictor Muscle
نویسندگان
چکیده
منابع مشابه
Mechanical effects of pharyngeal constrictor activation on pharyngeal airway function.
The mechanical effects of pharyngeal constrictor (PC) muscle activation on pharyngeal airway function were determined in 20 decerebrate, tracheotomized cats. In 10 cats, a high-compliance balloon attached to a pressure transducer was partially inflated to just occlude the pharyngeal airway. During progressive hyperoxic hypercapnia, changes in pharyngeal balloon pressure were directly related to...
متن کاملRespiratory-related pharyngeal constrictor muscle activity in decerebrate cats.
Respiratory-related activity of the hyopharyngeus (middle pharyngeal constrictor) and thyropharyngeus (inferior pharyngeal constrictor) muscles was determined in decerebrate, tracheotomized adult cats and compared with the electromyographic activity of the thyroarytenoid, a vocal cord adductor. During quiet breathing, the hyopharyngeus and usually the thyroarytenoid exhibited phasic activity du...
متن کاملInferior pharyngeal constrictor electromyographic activity during permeability pulmonary edema in lambs.
Newborn mammals exhibit an active expiratory upper airway closure during the first hours of extrauterine life. We have recently shown that permeability pulmonary edema led to active expiratory glottic closure in awake newborn lambs while hypoxia (inspired O2 fraction 8%; 15 min) did not. In the present study, we tested the hypothesis that expiratory glottic closure was accompanied by an increas...
متن کاملHistology of the Pharyngeal Constrictor Muscle in 22q11.2 Deletion Syndrome and Non-Syndromic Children with Velopharyngeal Insufficiency
Plastic surgeons aim to correct velopharyngeal insufficiency manifest by hypernasal speech with a velopharyngoplasty. The functional outcome has been reported to be worse in patients with 22q11.2 deletion syndrome than in patients without the syndrome. A possible explanation is the hypotonia that is often present as part of the syndrome. To confirm a myogenic component of the etiology of veloph...
متن کاملanterior and nasal transposition of the inferior oblique muscle in patients with the inferior oblique muscle overaction
purpose : to evaluate the results of anterior and nasal transposition (ant) of the inferior oblique muscle (io) in patients with the io muscle overaction methods : this retrospective case series included patients with io muscles overaction, in whom ant of the io muscle was performed. in patient with simultaneous horizontal deviation, horizontal strabismus surgery was also performed. they were e...
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ژورنال
عنوان ژورنال: Dysphagia
سال: 1997
ISSN: 0179-051X,1432-0460
DOI: 10.1007/bf03500907