The tensor veli palatini is thought to be responsible for eustachian tube function. It is motor to the inferior, middle and superior pharyngeal constrictors, levator veli palatini. Velopharyngeal closure is accomplished through the contraction of several velopharyngeal muscles including the levator veli palatini, musculus uvulae, superior pharyngeal constrictor, palatopharyngeus, palatoglossus, and salpingopharyngeus. The vagus nerve has both sensory and motor functions. The superior pharyngeal constrictor muscle is one of three pharyngeal constrictor muscles whose main function is to facilitate the process of deglutition. belly of digastric (cut) Superior pharyngeal constrictor Stylohyoid Middle pharyngeal constrictor Posterior belly. The function of the velopharyngeal mechanism is to create a tight seal between the velum and pharyngeal walls to separate the oral and nasal cavities for various purposes, including speech. Purpose of our study was to quantify operator-related variability in the contouring of PSCM on Computed Tomography (CT) scans and adherence with contours derived from MR images. The levator veli palatini (LVP) and the superior pharyngeal constrictor (SPC) influence velopharyngeal patency and soft palate position, but their behavior during respiration is incompletely characterized. The velopharyngeal mechanism consists of a muscular valve that extends from the posterior surface of the hard palate (roof of mouth) to the posterior pharyngeal wall and includes the velum (soft palate), lateral pharyngeal walls (sides of the throat), and the posterior pharyngeal wall (back wall of the throat). Background and purpose: Irradiation of the Pharyngeal Superior Constrictor Muscle (PSCM) seems to play a crucial role in radiation-related swallowing dysfunctions. Understanding the normal anatomy and physiology of the velopharyngeal mechanism is the first step in providing appropriate diagnosis and treatment for children born with cleft lip and palate. first order logic expression formed as result of function of. These VP ports function as nasal airways. neck that participate in feeding, swallowing, and other oral-pharyngeal behaviors. The PPF is sewn to the middle of the velum, creating VP ports on either side of the PPF. The PPF is superiorly based at the level of C2 or the adenoid pad, and is inset into the posterior free edge of the velum. Buy Article Permissions and Reprints ABSTRACT The PPF includes pharyngeal mucosa and a portion of the superior constrictor muscle.
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