ANATOMY

Detailed explanation-1: -Levator Labii Superioris The Sneering Muscle-Facial Expressions.

Detailed explanation-2: -The levator labii superioris muscle, also known as the quadratus labii, contributes to facial expression and movement of the mouth and upper lip. It courses alongside the lateral aspect of the nose, and its primary function is elevation of the upper lip.

Detailed explanation-3: -Orbicularis Oris The circular muscle around our mouth is Orbicularis Oris and this muscle brings our lips together so we can pucker up for a kiss!

Detailed explanation-4: -Known as the Smiling Muscle, the zygomaticus major is most responsible for our smile. It works in conjunction with up to 43 other facial muscles to provide a wide array of smiles. From a sly grin to a full, toothy smile that lights up the whole face, there are a million different smile configurations.