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The risorius is a facial muscle which pulls the corners of the lips out and back (towards the ear).
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∙ 14y ago
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What is the synergist to the smiling muscle?
Risorius muscle
What muscles do you use to smile?
It is primarily the zygomaticus major and risorius muscles that are responsible for a smile, aided in part by the action of the buccinator :)
What is the action and position of the frontails?
The position of the frontalis is over the frontal bone or the forehead. This muscle works with the occipitalis which is over the occipital bone in the back of the head. It's action is to elevate the eyebrows.
Position of muscles?
There are approximately 642 skeletal muscles within the typical human, and almost refers to the action of each muscle from the standard anatomical position.
What kind of stability is needed to hold a set joint position against resisitance for an isometric muscle action?
Static Stability
What muscle is used to close the lips?
mentralis buccula
What is the involuntary muscle action of alimentary canal?
The involuntary muscle action of the alimentary canal is called peristalsis. It uses this muscle action to move food through.
What muscle that counteracts the action of another muscle?
antagonist muscle
What describes the action of the digastric muscle?
THe action of the digastric muscle is to depress the mandible or evaluate the larynx
What action takes the most muscle in the face?
The frowning action.
What is the duration of action potential of skeletal muscle?
Action potential duration in skeletal muscle is around 2 - 5 milliseconds.
In a muscle group the muscle that relaxes during a particular action is what?
gdg
