Zygomaticus minor is a small facial muscle that plays a crucial role in facial expression, primarily by lifting the upper lip. It starts at the zygomatic bone and extends to the skin of the upper lip, aiding in a joyful or prompt facial demeanor. This muscle is integral in conveying emotions through facial movements.
The name "zygomaticus minor" is derived from the Greek word "zygon," meaning "yoke," referring to the yoke-shaped zygomatic bone, and "minor," indicating its smaller size compared to a nearby muscle, the zygomaticus major.
If the zygomaticus minor were absent or damaged, the ability to elevate the upper lip would be compromised, hindering expressions such as smiling or grimacing. As a result, facial expressions would lack a full range of motion, impacting non-verbal communication significantly.
