Facial Muscles Quiz

1. Which muscle raises the eyebrows and creates horizontal wrinkles across the forehead?

2. During an examination, a person can close and purse the lips but has difficulty lifting the upper lip. Which muscle is most directly associated with the impaired action?

3. After an injury near the parotid region, a person has an asymmetric smile but normal facial skin sensation. Damage to which nerve best explains this pattern?

4. Which sphincter-like muscle encircles the mouth and helps purse the lips?

5. Which cranial nerve provides the main motor innervation to the muscles of facial expression?

6. Which muscle is primarily a muscle of mastication rather than a muscle of facial expression?

7. What attachment pattern helps muscles of facial expression move the overlying skin?

8. Which muscle primarily pulls the corner of the mouth upward and laterally during a smile?

9. Which muscle pulls the corner of the mouth downward, contributing to a frowning expression?

10. Which muscle closes the eyelids, as when blinking or squinting?

11. A person is trying to keep food between the teeth while chewing. Which facial muscle compresses the cheek to assist this action?

12. A person draws the eyebrows downward and toward the midline, producing vertical lines between them. Which muscle is acting most directly?

13. Which muscle retracts the corner of the mouth mainly in a lateral direction, as in a tense or broad grimace?

14. Which muscle is most responsible for protruding the lower lip and wrinkling the skin over the chin?

15. A person can clench the jaw normally but cannot keep the cheek firmly pressed against the teeth when attempting to puff it out. Which muscle is most likely impaired?

16. Which thin, superficial muscle spreads across the front and sides of the neck and can tense the neck skin?