What is the large papillae on the tongue called?

The large papillae on the tongue are called circumvallate papillae. They are located at the back of the tongue and are characterized by their V-shaped arrangement. These papillae contain taste buds and play a key role in the sense of taste, particularly for bitter flavors. There are typically about 8 to 12 circumvallate papillae present on an average tongue.