Filiform papillae are tactile receptors covering the tongue, but do not contain what?

Filiform papillae are primarily involved in the mechanical aspect of texture perception on the tongue, serving as tactile receptors that help with the manipulation of food. Unlike other types of papillae, such as fungiform or circumvallate papillae, which contain taste buds that allow for the perception of taste, filiform papillae do not contain taste buds. This distinction highlights their role in sensing texture rather than flavor, making them unique among the various papillae on the tongue. Additionally, while filiform papillae are innervated and associated with the sensory nerve endings that facilitate touch, they are not involved in taste perception, which is the main reason taste buds are not present in this type of papillae.