ANATOMY

Detailed explanation-1: -The zygomaticus major muscle is a muscle of the human body. It extends from each zygomatic arch (cheekbone) to the corners of the mouth. It is a muscle of facial expression which draws the angle of the mouth superiorly and posteriorly to allow one to smile.

Detailed explanation-2: -Levator Anguli Oris The happy muscle, makes the corners of our mouth turn upwards into a smile.

Detailed explanation-3: -The masseter muscle provides powerful elevation and protrusion of the mandible by originating from the zygomatic arch and inserting along the angle and lateral surface of the mandible.

Detailed explanation-4: -Buccinator, a thin muscle in your cheek that holds each cheek toward your teeth.

Detailed explanation-5: -Zygomatic muscles (major and minor) – move the mouth corners up and outward when we smile. Risorius – the “smile” muscle. Pulls mouth corners laterally (outward) and forms dimples in the cheeks. This muscle is not always active in all people.