Question

Orbicularis oris

a) retracts angle of mouth depresses angle of mouth
b) depresses lower lip elevates upper lip elevates eyebrows
c) closes eye closes lips/mouth elevates and abducts upper lip
d) elevates and protracts mandible
e) flexes and rotates the head and neck extends head and neck

Answer 1

b

Step-by-step explanation:

Orbicularis oris muscle, also known as musculus orbicularis oris is a complex, multi-layered muscle which attaches through a thin, superficial musculoaponeurotic system to the dermis of the upper lip and lower lip and serves as an attachment site for many other facial muscles around the oral region.