Discussion: The Muscles of Mastication

Discussion: The Muscles of Mastication

Discussion: The Muscles of Mastication

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Which bone is controlled by the muscles of mastication?
The mandible (jawbone) is controlled by the four muscles of mastication (chewing).

The four muscles and their actions are:

temporalis: elevates and retracts the mandible (you can feel this by clenching your closed jaw and putting your hands on the sides of your head)

medial pterygoid: elevates mandible and allows for lateral movement (move your jaw side to side)

lateral pterygoid: protracts the mandible (push you chin forward to feel this movement)

masseter: also is involved with elevating and retracting.

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