Muscles of facial expressions

Question 1

What is the difference between the muscles of mastication, suprahyoid muscles and the muscles of facial expressions?

Answer 1

The muscles of facial expressions create skin movement only whereas the muscles of mastication and the suprahyoid muscles create skeletal movements.

Question 2

Which of the cranial nerves supplied the muscles of facial expressions?

Answer 2

VII (facial nerve)

Question 3

What are the actions of the muscles of facial expressions?

Answer 3

The scalp, the eyes and surrounding area, the mouth and surrounding area

Question 4

Which of the actions of the muscles of facial expressions are relevant to dental nursing?

Answer 4

The mouth and surrounding area

Question 5

What is the name of the muscle ring that supplies the mouth and surrounding areas?

Answer 5

orbicularis oris

Question 6

What is the action of the orbicularis oris?

Answer 6

Movement of the lips and mouth

Question 7

What is the name of the cheek muscle?

Answer 7

Buccinator

Question 8

What is the action of the buccinator?

Answer 8

To keep food and drinking within the confines of the teeth

Question 9

What is the name of the other muscle tissue ring associated with the muscles of of facial expression?

Answer 9

Orbicularis oculi

Question 10

What does the VII cranial nerve supply?

Answer 10

Motor: Muscles of facial expressions
Sensory: taste of posterior 2/3 of tongue
Autonomic: salivary glands