Orbicularis oculi muscle
| Orbicularis oculi muscle | |
|---|---|
| Details | |
| Origin | Frontal bone; medial palpebral ligament; lacrimal bone |
| Insertion | Lateral palpebral raphe |
| Artery | Ophthalmic, zygomatico-orbital, angular |
| Nerve | Temporal (orbital, palpebral) and zygomatic (lacrimal) branches of facial nerve |
| Actions | Closes eyelids |
| Antagonist | Levator palpebrae superioris |
| Identifiers | |
| Latin | musculus orbicularis oculi also musculus orbicularis palpebrarum |
| TA98 | A04.1.03.013 |
| TA2 | 2066 |
| FMA | 46779 |
| Anatomical terms of muscle | |
The orbicularis oculi is a sphincter-like muscle in the face that closes the eyelids.[1] It arises from the nasal part of the frontal bone, from the frontal process of the maxilla in front of the lacrimal groove, and from the anterior surface and borders of a short fibrous band, the medial palpebral ligament.
From this origin, the fibers are directed laterally, forming a broad and thin layer, which occupies the eyelids or palpebræ, surrounds the circumference of the orbit, and spreads over the temple, and downward on the cheek.