The Muscle Fascicle Arrangement of the Orbicularis Oris is Best

Question

The muscle fascicle arrangement of the orbicularis oris is best characterized as
A) parallel.
B) bipennate.
C) convergent.
D) unipennate.
E) circular.

Accepted Answer

The orbicularis oris is known as the “kissing muscle” due to its circular arrangement of muscle fascicles. This muscular arrangement allows for contraction and relaxation that allows for pursing and puckering of the lips to perform various functions such as sipping, whistling, and kissing.