Muscle that raises and retracts the jaw?

Prepare for the VTCT Level 2 Facial and Skincare Test. Revise with flashcards and multiple choice questions, accompanied by insightful explanations. Ace your assessment with confidence!

Multiple Choice

Muscle that raises and retracts the jaw?

The action being tested is a muscle that both raises (elevates) the jaw and pulls it back (retracts). The temporalis muscle does exactly this: its anterior fibers elevate the mandible to close the jaw, while its posterior fibers pull the mandible backward, retracting it when the mouth is closed or during chewing. It sits on the side of the skull and attaches to the coronoid process, allowing these directional movements. In contrast, the masseter mainly elevates the jaw and can contribute to protrusion but does not reliably retract. The buccinator and risorius are facial muscles involved in cheek compression and smiling, not jaw elevation or retraction. So the muscle that both raises and retracts the jaw is the temporalis.

The action being tested is a muscle that both raises (elevates) the jaw and pulls it back (retracts). The temporalis muscle does exactly this: its anterior fibers elevate the mandible to close the jaw, while its posterior fibers pull the mandible backward, retracting it when the mouth is closed or during chewing. It sits on the side of the skull and attaches to the coronoid process, allowing these directional movements.

In contrast, the masseter mainly elevates the jaw and can contribute to protrusion but does not reliably retract. The buccinator and risorius are facial muscles involved in cheek compression and smiling, not jaw elevation or retraction. So the muscle that both raises and retracts the jaw is the temporalis.

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