Dorsum of the tongue Flashcards
T/F: The dorsum of the tongue is completely within the oral cavity.
False: it is partially within the oral cavity and partially within the oropharynx
What is the the V shaped groove at the posterior aspect of the oral part of the tongue?
Sulcus Terminalis
The Sulcus Terminialis separates the tongue into what parts?
1) Oral Part (ant. 2/3)
2) Oropharyngeal part (pos. 1/3)
T/F: The two parts of the tongue are different developmentally, structurally, and in terms of nerve innervation?
True
What is located at the apex of the V of the sulcus terminalis?
Foramen Cecum
The foramen cecum is the embryological remnant of what structure?
Thyroglossal duct
What clinical condition is present when the thryoglossal duct does not obliterate and what is it often mistaken for?
Thyroglossal cysts
-Often mistaken for a thyroid mass
What is the shallow groove that is visible on the surface of the tongue?
Median groove
What are the conical projections with sharply pointed tips on the surface of the tongue?
Filiform Papille
What are the smallest projections found of the surface of the tongue?
Filiform Papillae
What are the mushroom shaped projections of the surface of the tongue?
Fungiform Papillae
T/F: Fungiform Papillae contain taste receptors (buds)
True
What are the largest projections on the surface of the tongue?
Vallate Papillae
What taste sensation do the vallate papillae sense and why is this significant?
Bitter- it is a survival adaptation to taste possible “poisons” and trigger the gag reflex if they are sensed
What of the grooves/ridges along the margin of the tongue?
Foliate Papillae
