The papilla are on your tongue, they detect the taste of salty foods, sour, or sweet.
According to Wikipedia - they are '...small prominences on the surface of the tongue...'
on tongue, helps to taste food on tongue, helps to taste food
The Papillae are ridges in the stratum germinativum that arise from the dermis. These ridges create permanent ridges in the fingers, palms, and soles of the feet. These ridges or "friction ridges"...