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Facial muscles
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Palpebral part of orbicularis oculi
The palpebral part of the orbicularis oculi (Latin: pars palpebralis musculi orbicularis oculi) is one of the orbicularis oculi muscle parts. It lies within the upper and lower eyelids. The orbicularis oculi muscle is classified as the circumorbital and palpebral facial muscle.
Palpebral part of orbicularis oculi | |
Origin | Medial palpebral ligament |
Insertion | Lateral palpebral ligament |
Action | Closes eyelids |
Innervation | Temporal and zygomatic branches of facial nerve (CN VII) |
Blood supply | Branches of facial, superficial temporal and ophthalmic arteries |
Origin
The palpebral part of the orbicularis oculi arises from the medial palpebral ligament.
Insertion
The fibers of the palpebral part insert into the lateral palpebral ligament.
Action
Upon activation, the palpebral part of the orbicularis oculi closes the eyelids.
Innervation
The palpebral part of the orbicularis oculi is innervated by the temporal and zygomatic branches of the facial nerve (CN VII).
Blood supply
The palpebral part of the orbicularis oculi muscle is supplied by the branches of the facial, superficial temporal and ophthalmic arteries.