Oct 30, 2023 · The main action of zygomaticus major is to pull the angle of the mouth superolaterally. In coordination with other buccolabial muscles, it facilitates speech and creates facial expressions.

It is innervated by branches of the facial nerve (cranial nerve VII). It is a muscle of facial expression, which draws the angle of the mouth superiorly and posteriorly to allow one to smile. Bifid …

Jan 23, 2026 · Explore the anatomy and biomechanics of the Zygomaticus Major, the muscle responsible for defining human smiles and facial health.

The zygomaticus major muscle (Latin: musculus zygomaticus major) is a paired facial muscle that extends between the zygomatic bone and the angle of the mouth. It is one of two zygomatic muscles, …

Learn about the zygomaticus major muscle: its origin, action, innervation and clinical correlations.

The zygomaticus major muscle is located in the skin of the face and is attached to the zygomatic bone, also known as the cheekbone. It is located in the middle third of the face, between the risorius and …

The zygomaticus muscles are a pair of facial expression muscles that play a major role in elevating the corners of the mouth, particularly during smiling. There are two main components: the zygomaticus …