A glycoprotein membrane surrounding the plasma membrane of an oocyte. It is a vital constitutive part of the latter, external but not extraneous to it. The zona pellucida first appears in multilaminar primary oocytes. [ http://en.wikipedia.org/wiki/Zona_pellucida ]
Term information
- NCIT:C33896
- UMLS:C0043519 (ncithesaurus:Zona_Pellucida)
- EHDAA:31
- EHDAA2:0002220
- TAO:0001111
- FMA:18674
- EHDAA:62
- MESH:D015044
- GAID:410
- EMAPA:16035
- ZFA:0001111
- VHOG:0000720
- Wikipedia:Zona_pellucida
- MA:0001715
- BTO:0003135
pheno_slim, vertebrate_core, human_reference_atlas
Outside the plasma membrane, three envelopes surround the ovum. The first, the primary egg envelope, lies between the plasma membrane and the surrounding cells of the ovary. The most consistent component of this primary layer is the vitelline membrane, a transparent jacket of fibrous protein. In mammals, the homologous structure is called the zona pellucida.[well established][VHOG]
zona radiata
vitelline envelope
vitelline membrane
pellucid zone
zona striata
oolemma
striated membrane
Term relations
- acellular anatomical structure
- part of some ovary
- has part some glycoprotein
- bounding layer of some oocyte