posterior fascicle of palatopharyngeus muscle

(redirected from sphincter of the pharyngeal isthmus)

posterior fascicle of palatopharyngeus muscle

[TA]
thinner portion of the muscle of the palatopharyngeal arch, originating in the region of the midline where its fibers interdigitate with the contralateral partner, then passing posterior to the levator veli palatini muscle to join the longitudinal layer of pharyngeal musculature; acts as a sort of sphincter, reducing the caliber of the isthmus of fauces at the palatopharyngeal arch.
Farlex Partner Medical Dictionary © Farlex 2012

pos·te·ri·or fas·ci·cle of pal·a·to·pha·ryn·ge·us mus·cle

(pos-tērē-ŏr fasi-kĕl pală-tō-fă-rinjē-ŭs mŭsĕl) [TA]
Thinner portion of the muscle of the palatopharyngeal arch.
Synonym(s): palatopharyngeal sphincter.
Medical Dictionary for the Dental Professions © Farlex 2012
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