| Muscle | Origin | Insertion | Action |
| orbicularis oculi | frontal and maxillary bones | skin around orbit | depresses eyelids |
| orbicularis oris | muscles around mouth | skin around mouth | protrudes (purses) lips |
| buccinator | maxilla and mandible | angle of mouth | retracts angle of mouth |
| platysma | fascia of deltoid muscle | mandible and skin around lower lips | depresses lower lip and mandible |
| frontalis | galea aponeurotica | orbicularis oculi and adjacent skin | draws scalp forward and raises eyebrows |
| occipitalis | occipital bone | galea aponeurotica | draws scalp backward |
| zygomaticus major | zygomatic bone | skin at angle of mouth and orbicularis oris | draws angle of mouth upwards |
| temporalis | temporal fossa | coronoid process of mandible | elevates mandible |
| masseter | zygomatic arch | mandible and skin arond lower lip | elevates mandible |
