Final answer:
The depressor anguli oris is the muscle responsible for depressing the corners of the mouth when frowning, although it's not directly mentioned in the provided material.
Step-by-step explanation:
When you frown, the muscle that depresses the corners of your mouth is called the depressor anguli oris. Although not directly stated in the reference material provided, the depressor anguli oris is a facial muscle known for controlling the downward movement of the mouth's corners, which is associated with expressions such as frowning. While the information presented details other facial muscles like the buccinator muscle, which compresses the cheek, and the corrugator supercilii, which moves the eyebrows, it helps us understand the complex nature of facial expressions and the roles that various muscles play.
The muscle that depresses the corners of your mouth when you frown is called the orbicularis oris.The depressor anguli oris is the muscle responsible for depressing the corners of the mouth when frowning, although it's not directly mentioned in the provided material.