Final answer:
The circumvallate papillae, located at the back of the tongue and shaped like an inverted "V", are associated with the ducts of Von Ebner's glands, which secrete fluids that enhance taste sensation.
Step-by-step explanation:
The papillae associated with the ducts of Von Ebner's glands are the circumvallate papillae. These papillae are wall-like structures shaped in an inverted "V" at the back of the tongue. Each circumvallate papilla is surrounded by a groove and contains about 250 taste buds. The Von Ebner's glands are salivary glands that open into the trenches surrounding the circumvallate papillae. They secrete a watery fluid that helps flush material from the grooves to enhance taste sensation.
Besides circumvallate papillae, the tongue also has other types of papillae, such as foliate, filiform, and fungiform papillae. Foliate papillae are leaf-like and located on the edges of the tongue, containing numerous taste buds within their folds. Fungiform papillae, which are mushroom-shaped and are found across a large area of the tongue, contain taste buds primarily towards the rear. Filiform papillae, however, are thread-like and do not contain taste buds; instead, they possess touch receptors that help in moving food around in the mouth and create an abrasive surface that aids in mechanical digestion.