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3 years ago

When the ___________ contracts, the corner of the mouth is drawn upward and laterally when laughing.

Medicine

1 answer:

Sedaia [141]3 years ago

5 0

Answer:

zygomaticus Major

Explanation:

The Zygomaticus major , is one of the muscle of the human body , it is one the facial muscle responsible for smiling or laughing . Like other muscles responsible for facical expressions , the zygomaticus major is also innervated by the facial nerves.

The zygomaticus major extends from our cheekbone to the corners of the mouth.

Basically ,

When the <u>Zygomaticus major</u> contracts , the corner of the mouth is drawn upward , during the process of laughing.

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