Do the papillae function in digestive system?

The papillae do function in the digestive system. They are small, finger-like projections that line the small intestine and help to absorb nutrients from food. The papillae are covered in microvilli, which are even smaller projections that further increase the surface area of the intestine and help to absorb nutrients. The papillae also help to secrete enzymes that break down food and mucus that helps to protect the intestine from damage.