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Facial Muscles By Nicky Adams
AIMS We are going to explore the various facial musclesThen learn the various functions of these muscles
These are the names of the muscles that move the head:Sternomastoid Trapezius
Sternomastoid This muscle runs from sternum to the clavicle bone, and the temporal bone It flexes the neck, rotates and bows the head
Trapezius This is a large triangular muscle, covering the back of the neck and upper back It draws the head backwards, and allows movement at the shoulder
These are the muscles of mastication:Masseter Temporalis
Masseter This muscle is found around the cheek area, it extends from the zygomatic bone to the mandible It clenches the teeth, closes and raises the lower jaw
Temporalis It extends from the temples at the sides of the head, to the mandible It raises the jaw and draws it backwards, as in chewing
These are the muscles of facial expressionOccipital-frontalis Corrugator Orbicularis oculi Risorius Buccinator Zygomaticus Orbicularis oris Mentalis Depresor labii Platysma
Occipital-frontalis This muscle is found at the forehead, and runs to the occipital region This muscle raises the eyebrows Giving a surprised facial expression
Corrugator This muscle is found between the eyebrowsIt draws the eyebrows together Making your frown
Orbicularis oculi This muscle surrounds the eyes It closes the eyelidUsed when winking
Risorius This muscle extends diagonally from the corners of the mouthIt draws the mouth corners outwards Used when smiling
Buccinator This muscle is found inside the cheeksIt compresses the cheeks Is used when blowing
Zygomaticus This muscle extends diagonally from the corners of the mouth Lifts the mouth corners, upwards and outwards Is used when smiling and laughing
Orbicularis oris This muscle surrounds the mouthIt is used to purse the lips, and closes the mouth It is used to pout and kiss
Mentalis This muscle is found around the chinIt raises the lower lip, causing the chin to wrinkle It will give a doubt facial expression
Depressor labii This muscle extends over the chinIt draws down the mouths corners Is used when sulking
Platysma This muscle is found at the sides of the neckIt draws down the mouths corners downwards and backwards It is used when we are scared frightened (fear, horror)
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