how many facial muscle are involved in speaking?
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twenty muscles
They are controlled by approximately twenty muscles of the face that can pull up or down on the middle or either side. In addition, there is a sphincter-like muscle, the orbicularis oris, which wraps around the lips to constrict the labial (relating to the lips) opening, i.e., the mouth, and protrude the lips.
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Answer: They are controlled by approximately twenty muscles of the face that can pull up or down on the middle or either side. In addition, there is a sphincter-like muscle, the orbicularis oris, which wraps around the lips to constrict the labial (relating to the lips) opening, i.e., the mouth, and protrude the lips.
Explanation:
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