Internal Organs+Glands · 58. Isthmus of fauces. Tonsils.
Explains the isthmus of the fauces, the narrow opening between the oral cavity and the oropharynx, and its boundaries: the soft palate above, the palatoglossal arches at the sides and the tongue below. Describes the two pillars formed by the palatoglossus and palatopharyngeus muscles, their anterior and posterior arches, and the palatine tonsil lying between them. Closes with the isthmus's roles in swallowing, speech and protecting the airway, with an accompanying picture.
Topic 55 of 264 in the MU Sofia syllabus for Anatomy (Dental Medicine, Year 2). The free AceMed note covers it in 3 sections, about 90 words (1 min of reading), with 10 flashcards.
In this note
FAUCES
ISTHMUS
Functions :
ISTHMUS
The isthmus of the fauces refers to the narrow opening btw. the oral cavity and the oropharynx
Bounded:
Superiorly by the soft palate laterally by the palatoglossal arches Inferiorly by the tongue.
They are 2 pillars, formed by the palatoglossus and the palatopharyngeus muscle, covered with mucuse membrane.
The anterior pillar is known as the palatoglossal arch, and the posterior one is known as the palatopharyngeal arch
Between these two arches is the palatine tonsil
Functions :
1. Swalling & passage of food.
2. Speech and Articulations
3. Protection of the airways.
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