Question

choose the correct answer. the muscle that moves the lower jaw up to close the mouth when chewing is the ______. frontalis temporalis sternocleidomastoid masseter

Explanation:

The frontalis muscle is in the forehead, controlling eyebrow movement. The temporalis assists in jaw closure but is not the primary muscle for moving the lower jaw up during chewing. The sternocleidomastoid is in the neck, moving the head. The masseter is the main muscle that elevates the lower jaw to close the mouth when chewing.

Answer:

masseter