What is the eye muscle that closes the lid called?

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The muscle that closes the eyelid is called the orbicularis oculi. Gray's Anatomy (1918) describes it as a flat, circular sphincter muscle surrounding the eye.

Summary

The muscle that closes the eyelid is called the orbicularis oculi. Gray's Anatomy (1918) describes it as a flat, circular sphincter muscle surrounding the eye.

What it is

  • A flat, circular sphincter muscle surrounding the eye.
  • Closes the eyelids.
  • Also compresses the tear sac to help drain tears.

Where it is

  • Encircles each eye.
  • Lies just under the skin of the eyelids and around the orbit.
  • Attached to bone at the inner corner of the orbit.

Sources

According to Gray's Anatomy of the Human Body (1918, public domain):

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