General Neurology
Micturition syncope and defecation syncope
May. 14, 2024
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Extraocular muscles extending from a common tendinous origin (anterior view)
Optic nerve (B) contained within the dural sheath and coursing through the common tendinous ring. Superior rectus (A), lateral rectus (D), levator palpebrae superioris (E), medial rectus (F), inferior rectus (G). Intra-orbital vessels (C).
(Source: Lacey H, Oliphant H, Smith C, Koenig M, Rajak S. Topographical anatomy of the annulus of Zinn. Sci Rep 2022;12[1]:1064. Creative Commons Attribution 4.0 International [CC BY 4.0] license, creativecommons.org/licenses/by/4.0.)