Asked by Carla Marie on May 19, 2024
Verified
Which of the following best describes the orbicularis oris?
A) it pulls the lower lip down and back
B) it closes, purses, and protrudes the lips
C) it allows blinking and squinting of the eyes
D) it draws the eyebrows together
Orbicularis Oris
A muscle around the mouth that controls the movements of the mouth and lips, crucial in forming facial expressions and speech.
Eyebrows
The strips of hair growing above the eyes, playing a role in facial expression, communication, and protection of the eyes from sweat and debris.
- Discern the muscles utilized in facial expressions and comprehend their unique actions.
Verified Answer
MP
MUHINDER PannirselvamMay 25, 2024
Final Answer :
B
Explanation :
The orbicularis oris is the muscle that encircles the mouth and is responsible for closing, pursing, and protruding the lips. It does not pull the lower lip down and back (A), allow blinking and squinting of the eyes (C), or draw the eyebrows together (D).
Learning Objectives
- Discern the muscles utilized in facial expressions and comprehend their unique actions.