The anulus tendineus communis, also known as the common tendinous ring of Zinn or Zinn's anulus, is the common origin of all the extraocular muscles except the Musculus obliquus inferior 1.
Anatomy
The Nervus opticus, Nervus abducens, the superior and inferior divisions of the Nervus oculomotorius, the Nervus nasociliaris, and the Arteria ophthalmica pass through the anulus tendineus communis.
Figure
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