Questions: Contraction of what muscle pulls the cheeks inward? Temporalis Platysma Masseter Buccinator

Contraction of what muscle pulls the cheeks inward? Temporalis Platysma Masseter Buccinator
Transcript text: Contraction of what muscle pulls the cheeks inward? Temporalis Platysma Masseter Buccinator
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Solution

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The answer is the fourth one (or D): Buccinator.

Explanation for each option:

  1. Temporalis: This muscle is primarily involved in elevating the mandible (closing the jaw) and is not responsible for pulling the cheeks inward.
  2. Platysma: This muscle is located in the neck and is involved in depressing the mandible and tensing the skin of the neck. It does not pull the cheeks inward.
  3. Masseter: This muscle is one of the main muscles involved in chewing (mastication) and is responsible for elevating the mandible. It does not pull the cheeks inward.
  4. Buccinator: This muscle is located in the cheek and is responsible for compressing the cheek against the teeth, which effectively pulls the cheeks inward. It is used in actions such as blowing and sucking.

Summary: The Buccinator muscle is responsible for pulling the cheeks inward.

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