Oral Muscle Group Flashcards
1
Q
What is the action of the Depressor Anguli Oris?
A
Frown
2
Q
What is the action of the Depressor Labii Inferioris?
A
Draws lower lip downward and laterally; like a partial cringe
3
Q
What is the action of the Mentalis?
A
Raises and protrudes lower lip
4
Q
What is the action of the Risorius?
A
Retracts corners of mouth (half-effort grin)
5
Q
What is the action of the Zygomaticus?
A
Major- smile (corners of mouth up and away)
Minor- draws upper lip upward (showing teeth)
6
Q
What is the action of the Orbicularis Oris?
A
Closes lip; protrudes lip
7
Q
What is the action of the Buccinator?
A
Presses cheek against teeth; compresses distended cheeks (play the bugle)
8
Q
What is the action of the Platysma?
A
Tenses the skin of the neck and can bring corners of the mouth down
