We just learned about the Cheek Muscles.
There are two muscles that help you raise and lower your eyebrows.
The occipitofrontalis muscle raises your eyebrows like a surprised look.
The corrugator supercilii muscle lowers your eyebrows like a frown.
![occipitofrontalis muscle](https://upload.wikimedia.org/wikipedia/commons/f/fa/Gray378.png)
(from: wikipedia - occipitofrontalis muscle)
![corrugator supercilii muscle](https://upload.wikimedia.org/wikipedia/commons/b/b4/Corrugator_supercilii.png)
(from: wikipedia - corrugator supercilii muscle)
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