NEET PG DENTAL EXAM

Detailed explanation-1: -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.

Detailed explanation-2: -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. Along with risorius, zygomaticus major contributes to laughing, which is why they are deemed the “laughing muscles”.