Utah Cosmetology State Board Practice Exam – Practice Test & Study Guide

The muscle located above and in front of the ear that is responsible for jaw movement is the temporalis. This fan-shaped muscle plays a significant role in the process of chewing (mastication) by elevating the mandible (jawbone) to close the mouth. The temporalis muscle is particularly effective for powerful, rapid movements of the jaw, making it essential for chewing tough foods.

It is important to understand the functions of the other muscles listed: the masseter is also involved in jaw movement but is located at the back of the jaw rather than above and in front of the ear. The frontalis muscle is primarily involved in facial expressions, particularly in raising the eyebrows, while the orbicularis muscle, which encircles the mouth or eyes, is responsible for actions like closing the lips or blinking. Therefore, the temporalis is uniquely suited for its role in jaw movement, distinguishing it from the other muscles mentioned.