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Which of the Following Muscle Movements Defines a Duchenne Smile

Question 27

Multiple Choice

Which of the following muscle movements defines a Duchenne smile, as distinct from a non-Duchenne smile?


A) Lifting the inner and outer eyebrows
B) Parting the lips and opening the mouth wide
C) Wrinkling the nose
D) Contraction of the large muscle surrounding the eyes

Correct Answer:

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