Zygomaticus minor muscle

The Zygomaticus minor muscle (pronounced: zy-go-mat-ik-us minor muscle) is a muscle of the human body, specifically located in the facial region. It is one of the muscles responsible for facial expressions, particularly those related to smiling.

Etymology

The term "Zygomaticus" is derived from the Greek word "zygon", which means "yoke". This is in reference to the arch-like shape of the zygomatic bone, where the muscle is primarily attached. The term "minor" is a Latin word meaning "smaller", used to differentiate this muscle from the larger Zygomaticus major muscle.

Anatomy

The Zygomaticus minor muscle originates from the zygomatic bone, specifically the malar surface of the zygomatic bone. It extends downwards and medially, inserting into the skin and muscle of the upper lip. It lies medial to the Zygomaticus major muscle and lateral to the Levator labii superioris muscle.

Function

The primary function of the Zygomaticus minor muscle is to elevate the upper lip, aiding in expressions such as smiling and laughing. It works in conjunction with other muscles of facial expression, including the Zygomaticus major muscle and the Levator labii superioris muscle.

Related Terms

Zygomaticus major muscle: A muscle of the face that draws the angle of the mouth superiorly and posteriorly to allow for smiling.
Levator labii superioris muscle: A muscle of the face that elevates the upper lip, deepening the furrow between the nose and mouth.
Zygomatic bone: The bone from which the Zygomaticus minor muscle originates.