Reflexogenic Areas for Velopharyngeal Closure in Rabbits

Responsive areas for velopharyngeal closure were examined by recording diaphragmatic and superior pharyngeal constrictor activities of anesthetized rabbits

Yozo Miyaoka

2006

Scholarcy highlights

  • Responsive areas for velopharyngeal closure were examined by recording diaphragmatic and superior pharyngeal constrictor activities of anesthetized rabbits
  • Pressure stimulation was applied with a cotton applicator to the mucosae of three pharyngeal areas: the anterior and posterior walls of the nasopharynx and the posterior wall of the oropharynx
  • The higher responsiveness of the posterior wall of the nasopharynx for velopharyngeal closure is suggested to be attributed to higher density and/or lower threshold of pressure receptors in this area than those in the other two areas tested
  • Possible physiological implications of the present results are discussed

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