Isthmus faucium
The isthmus faucium (Latin for "throat narrow", "throat narrow") or pharyngeal arch is the rear boundary of the oral cavity and the transition to the throat , more precisely to the oropharynx ( pars oralis pharyngis , oropharynx ). The food route narrows at this point. The isthmus faucium is delimited above by the soft palate ( velum palatinum ) with the uvula , on the side by the posterior arch ( arcus palatopharyngeus ) supported by the musculus palatopharyngeus and the anterior palatal arch ( arcus palatoglossus ) supported by the musculus palatoglossus and below by the base of the tongue .
Functionally, the isthmus faucium represents the boundary between the voluntary and the involuntary part of the act of swallowing .
literature
- Theodor H. Schiebler, Walter Schmidt: Anatomy: cytology, histology, history of development, macroscopic and microscopic human anatomy . Springer-Verlag, 5th edition 2013, ISBN 9783662057339 , p. 447.