what is the groove on the upper lip called
Answer: Philtrum. The subtle groove between the base of your nose and your upper lip is called a philtrum and in the human body (and that of other primates) no longer serves a function.Among many other mammals that have philtrums, however, the groove does in fact serve a purpose.he subtle groove between the base of your nose and your upper lip is called a philtrum and in the human body (and that of other primates) no longer serves a function. Among many other mammals that have philtrums, however, the groove does in fact serve a purpose.