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Question: 1 / 400

What is the primary role of the zygomaticus muscle?

To elevate the eyebrows

To control eyelid movement

To assist in chewing

To facilitate smiling

The zygomaticus muscle plays a crucial role in facilitating smiling, making it the correct answer. This muscle is located in the facial region and is primarily responsible for lifting the corners of the mouth upward and outward during smiling, which contributes to expressing joy or happiness. Its action is essential for creating the facial expressions that convey positive emotions, making it central to non-verbal communication.

In addition, the zygomaticus muscle's specific connections allow it to have a significant impact on the overall appearance of the face, enhancing expressiveness. Smiling involves a complex coordination of several facial muscles, but the zygomaticus is particularly highlighted for its direct involvement in this action. It is one of the key muscles called into action when an individual smiles, drawing attention to how important it is for emotional expression.

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