Question

which of the following muscles is specifically a muscle used for chewing?

a.) zygomaticus
b.) orbicularis oris
c.) masseter
d.) buccinator

Explanation:

Identify the primary muscles of mastication

The primary muscles responsible for chewing (mastication) are the masseter, temporalis, medial pterygoid, and lateral pterygoid.

Evaluate the given options

• Zygomaticus: A muscle of facial expression used for smiling.
• Orbicularis Oris: A muscle of facial expression used for puckering the lips.
• Masseter: A powerful muscle of mastication that elevates the mandible to close the jaw during chewing.
• Buccinator: A muscle of facial expression that compresses the cheeks (helps keep food between teeth but is not a primary muscle of chewing).

Select the correct option

The masseter is specifically classified as a primary muscle used for chewing.

Answer:

• a.) Zygomaticus
• b.) Orbicularis Oris
• c.) Masseter (Correct answer)
• d.) Buccinator