Philtrum

Definition

The philtrum is the vertical groove located on the upper lip, extending from the nose to the lip's top border. It is a noticeable feature in human facial anatomy that plays a minor role in speech and facial expression.

Related terms

Nasal Septum:

A cartilaginous structure that separates the nostrils and provides structural support to the nose.

Upper Lip: The upper part of the lips that covers the anterior teeth when closed and plays a key role in forming facial expressions and articulating sounds.

Respiratory Tract: The series of organs involved in taking in oxygen and expelling carbon dioxide; includes structures like the nose, mouth, throat (pharynx), larynx, trachea, bronchi, and lungs