| intersheath spaces of optic nerve | <anatomy, nerve> The spaces within the internal sheath of the optic nerve, between the arachnoidal and pial layers, filled with cerebrospinal fluid and continuous with the subarachnoid space. Synonym: spatia intervaginalia nervi optici, intersheath spaces of optic nerve, Schwalbe's spaces. (05 Mar 2000) |
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| intervillous spaces | The space's containing maternal blood, located between placenta villi; they are lined with syncytiotrophoblast. (05 Mar 2000) |
| zonular spaces | The spaces between the fibres of the ciliary zonule at the equator of the lens of the eye. Synonym: spatia zonularia, Petit's canals. (05 Mar 2000) |
| Kuhnt's spaces | Shallow diverticula or recesses between the ciliary body and ciliary zonule which open into the posterior chamber of the eye. (05 Mar 2000) |