Orbicularis oculi muscle
| Orbicularis oculi muscle |
|---|
|
| origin |
| Frontal bone , maxilla, and nasal celiac ligament |
| approach |
| Raphe palpebralis lateralis |
| function |
| Eyelid closure |
| Innervation |
| Facial nerve ( cranial nerve VII) |
The orbicularis oculi muscle ( Latin for "eye ring muscle") is a skeletal muscle that encircles the eye in a ring shape and serves to close the eyelid gap and thus also the eyelid closure reflex . It belongs to the facial muscles .
It arises on the nasal part of the frontal bone and upper jaw as well as on the nasal ligament , encompasses the eye and the lids and attaches to the raphe palpebralis lateralis.
The muscle is innervated by the facial nerve (VII. Cranial nerve ) , which sends nerve fibers to this muscle via the parotid plexus . The blood supply takes place via the ramus zygomaticoorbitalis of the arteria temporalis superficialis .
The pars lacrimalis of the orbicularis oculi muscle is called the Horner muscle , was first described in 1745 by Joseph-Guichard Du Verney and named after the anatomist William Edmonds Horner (1793-1853).
Web links
- Entry on Musculus orbicularis oculi in Flexikon , a wiki from DocCheck (animated muscle with skin that can be faded in and out)
Individual evidence
- ↑ Barbara I. Tshisuaka: Horner, William Edmonds. In: Werner E. Gerabek , Bernhard D. Haage, Gundolf Keil , Wolfgang Wegner (eds.): Enzyklopädie Medizingeschichte. De Gruyter, Berlin / New York 2005, ISBN 3-11-015714-4 , p. 617.