Wachendorf membrane


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pu·pil·lar·y mem·brane

remnants of the central portion of the anterior layer of the iris stroma (the iridopupillary lamina) that occludes the pupil in fetal life, and normally atrophies about the seventh month of gestation. Persistent strands usually stretch across the pupil from one iris collarette to the other, without touching the pupillary margin. Failure to regress is a rare cause of congenital blindness.

cell mem·brane

(sel mem'brān)
The protoplasmic boundary of all cells that controls permeability and may serve other functions through surface specializations (e.g., active ion transport, absorption by formation of pinocytotic vesicles, and antigen recognition). Its fine structure is trilaminar and consists of the electron-dense lamina externa and lamina interna with an electron-lucent lamina intermedia.
Synonym(s): plasma membrane, plasmalemma, Wachendorf membrane (2) .

pu·pil·la·ry mem·brane

(pyū'pi-lar-ē mem'brān)
A membrane that develops from mesenchymal tissue posterior to the cornea; it occludes the pupil and usually atrophics during the seventh month of pregnancy.
Synonym(s): membrana pupillaris [TA] , Wachendorf membrane (1) .

Wachendorf,

Eberhard J., German botanist and anatomist, 1702-1758.
Wachendorf membrane - the protoplasmic boundary of all cells that controls permeability and may serve other functions through surface specializations. Synonym(s): cell membrane; pupillary membrane

cell mem·brane

(sel mem'brān)
The protoplasmic boundary of all cells that controls permeability and may serve other functions through surface specializations.
Synonym(s): plasma membrane, plasmalemma, Wachendorf membrane (2) .