What are the facial muscles and their functions?

Orbicularis oris – the circular muscle of the mouth. Puckers the lips and brings mouth corners towards the middle line. Depressor anguli oris – pulls mouth corners downward. Levator labii superioris and depressor labii inferioris – pull the upper and lower lips up and down respectively when we grin.

What are the 4 main muscles of the face?

Muscles of facial expression include frontalis, orbicularis oris, laris oculi, buccinator, and zygomaticus. These muscles of facial expressions are identified in the illustration below. There are four pairs of muscles that are responsible for chewing movements or mastication.

What is the function of the face?

Vision, hearing, olfaction, eating, and breathing are considered the primary functions of the face. In addition, the face is important for expression. People who experience facial deformities due to trauma or burns possess a negative self-image compared to those with normal faces [1].

What is the action of the masseter?

The masseter muscle is one of the four muscles responsible for the action of mastication (chewing). When the masseter contracts it causes powerful elevation of the mandible causing the mouth to close.

Which muscle is used to smile?

zygomaticus major muscles
A, the orbicularis oculi and zygomaticus major muscles during smiling.

What muscles are used for frowning?

List of Muscles used to Frown:

  • Frontalis: 2 muscles, Elevate both the eyebrows.
  • Procerus: 1 muscle.
  • Orbicularis Oris: 2 muscles used to close the mouth.
  • Depressor Anguli Oris: 2 muscles draw the angle of the mouth downward.
  • Depressor Labii Inferioris: 2 muscles Lower the Lower lip on both sides.

What is the kissing muscle called?

Orbicularis oris muscle
Orbicularis oris muscle along with the buccinator and pharyngeal constrictor form a functional unit, known as “buccinator mechanism” which has an important role in orofacial function (swallowing, sucking, whistling, chewing, vowel pronunciation, kissing).

What muscles are used when frowning?

What is the action of Buccinator?

The buccinator muscle is the major facial muscle underlying the cheek. It holds the cheek to the teeth and assists with chewing.

What is the action of sternocleidomastoid?

Function. Rotation of the head to the opposite side or obliquely rotate the head. It also flexes the neck. When acting together it flexes the neck and extends the head.