The levator labii superioris muscle arises from the upper lip, carrying it a little forward. The zygomaticus minor is a small bundle of muscle fibers lying in the area of the cheek. The levator labii superioris alaeque nasi raises the upper lip and dilates the nostril. These three muscles, working together, form the nasolabial furrow, from the side of the nose to the upper lip, which is deepened in Continue Scrolling To Read More Below...