ANATOMY

Detailed explanation-1: -The happy muscle, makes the corners of our mouth turn upwards into a smile.

Detailed explanation-2: -Technically, the zygomaticus muscles contract to draw the corners of the mouth upward and outward to create your smile. If the zygomaticus muscle splits at birth, it creates another pleasing physical characteristic – dimples.

Detailed explanation-3: -The levator anguli oris (caninus) inserts at the corners of the mouth at an angle, and is associated with other muscles including the zygomaticus, triangularis, and orbicularis oris. When innervated, this muscle contracts to lift the corners of the mouth, producing part of the expression of a smile.

Detailed explanation-4: -Levator anguli oris muscle As its name suggests, the main function of the levator anguli oris is to elevate the angles of the lips, thereby contributing to producing a smile, together with the risorius, zygomaticus major and minor.