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modifications will be sent to our editors for review. human
digestive system The floor of the mouth can be seen only when
the tongue is raised. In the midline is a prominent, elevated
fold of mucous membrane ( frenulum linguae) that binds each lip
to the gums, and on each side of this is a slight fold called a
sublingual papilla, from which the ducts of the submandibular
salivary glands open. Running outward and backward from each
sublingual papilla is a ridge (the plica... congenital
shortening of the flap of mucous membrane (frenum) beneath the
tongue, a condition that sometimes interferes with protrusion of
the tongue. The name comes from the belief, of folk origin, that
the anomaly is the cause of speaking or feeding difficulties.
Medical studies suggest that such shortening of the frenum is a
normal variation that does not interfere with either feeding
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