It may take up to 100 times more energy to chew than when you smile.
It is either frown or jump.
You take very few muscles to smile and many more muscles are used when you swim.
Smiling is an action produce by more than one muscle but the nerve that allows you to do that is the facial nerve (7th cranial nerve). Facial nerve has 5 branches and the action of all 5 allows you to smile nicely. The temporal branch allow you to wrinkle your forehead, the zygomatic branch allows you to partially close your eyes, the buccal branch allow you to elevate your chin, and the marginal mandibular allow you to widen your mouth laterally.
Agonist
The answer is AGONIST.
according to my anatomy and physiology teacher when you frown you use your facial muscles the specific types i never learned.
The muscle pushes against the other muscle that does the opposite action. Take the bicep for example the bicep pulls while the tricep also pulls. the two muscles cancel each other out, but while still pulling making the muscle more showing.
More Than You Can Chew - 2009 is rated/received certificates of: USA:R
It take more facial muscles to frown than to smile.
Dogs chew all your stuff because they think it is a fun game. If you give a dog a chew toy and teach them that is what they should chew on, they are more likely to chew on their toy then your stuff.
The main muscle that pull the edges of the lips superoposteriorly to form the smile is the buccinator. _________________________________ Actually, the buccinator is more useful for holding the cheek to the teeth during chewing, (and is also quite useful for trumpet playing). Although the buccinator does aid a little in smiling, it is primarily the zygomaticus major and risorius muscles that are responsible for a smile :)
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