First episode release date was <span>February 27, 2012</span>
Buccinators are muscles in the cheek that help smiling.
Laris oculi are muscles helping close eyelids.
Orbicularis oris is a muscle that helps manipulate the mouth:
the correct answer is D. all the above are muscles that help facial expression.
The neuron, or nerve cell, is the basic functional unit of the nervous system
