What is the function of uvula? I think I scratched it with my toothbrush this morning!

Uvula function. The uvula is part of the soft palate and helps to seal the maxillary sinus during swallowing. If you traumatized it it can be painful and give the feeling of a sore throat. Be sure to baby the area, by eating softer foods and chewing your food well before swallowing. Stay away from hard or scratchy foods for a while. Without re-injury it should in several days.
Uvula function. The specific function(s) of the uvula are not known for certain. It is thought that the uvula helps with effective swallowing, contributes to the start of the protective gag reflex, helps in the formation of some speech sounds and plays a role in immunity.