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How many muscles does it take to smile?

In spite of what you might have heard or read in an e-mail, science doesn't have a definitive number. People's smiles vary; some people have more facial muscles than others, giving them a wider range of expression.

Continue Learning about Functions of Muscles

How do nerves in muscles communicate with the body?
Gerald M. SilvermanGerald M. Silverman
Under ideal circumstances, the nerves in muscles are constantly producing and transmitting infor...
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What is the function of the gluteus maximus muscle?
Rick OldermanRick Olderman
The gluteus maximus is an important muscle because it is a prime mover of the leg bone into extensio...
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What is the most important muscle for improving my vertical jump height?
National Academy of Sports MedicineNational Academy of Sports Medicine
This common question is not easily answered.  Many muscles contribute to a vertical leap, includ...
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What is the function of the gluteus medius?
Rick OldermanRick Olderman
The gluteus medius originates on the top of the pelvis (iliac crest), runs from the front to the bac...
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.