Final answer:
The term 'nasolabial' is divided into 'nas-' referring to the nose and '-labial' to the lips, denoting the region related to both the nose and the lips.
Step-by-step explanation:
To divide and label the medical term nasolabial, we first break it down into its component parts: naso- and -labial. The prefix 'nas-' refers to the nose, and the suffix '-labial' pertains to the lips. When combined, the term nasolabial literally means pertaining to the nose and the lips. Specifically, the nasolabial area includes the nasolabial fold, which is the skin crease that runs from each side of the nose to the corners of the mouth. These folds become more prominent with age and are often a focus in facial rejuvenation procedures. The term is used in both medical and anatomical contexts to describe features or concerns related to the area where the nose meets the upper lip.