Asked by Anonymous
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| Source: OpenStack, CC BY-SA 4.0 |
- Smiling and laughing: Zygomaticus major
- Sadness: Levator labii superioris and levator angularis
- Grief: Depressor anguli oris
- Anger: Dilator naris and Depressor septi
- Frowning: Corrugator supercilli and procerus
- Horror, terror and fright: Platysma
- Surprise: Frontalis
- Doubt: Mentalis
- Grinning: Risorius
- Contempt: Zygomaticus minor
- Closing the mouth: Orbicularis oris
- Whistling: Buccinator and orbicularis oris
- Winking: Orbicularis oculi
