Muscles of facial expression Flashcards
1
Q
What nerve innervates the muscles of facial expression?
A
Facial nerve
2
Q
Action of occcipital frontalis
A
Raising eyebrows
3
Q
Action of orbicularis oculi
A
Outer orbital- closes eyelid tightly
Inner palperable- closes eyelid gently
4
Q
Action of zygomaticus minor
A
- elevate upper lip
5
Q
Action of zygomaticus major
A
Pull angle of mouth up and out
6
Q
Action of Levator angularis
A
Elevates corner of mouth
7
Q
Action of depressor angularis
A
Lowers corner of mouth
8
Q
Action of levator labii superioris
A
elevator of upper lip
9
Q
Action of depressor labii inferioris
A
depression of lower lip
10
Q
What is the platysma muscle responsible for?
A
tension of skin in the neck
