Write the classification of egg membranes.
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On the basis of origin, egg- membranes are divided into three parts
- (1) Primary egg membrane: Oocyte secretes this membrane Examples: Zona Pellucida, Vitelline membrane etc.
- (2) Secondary egg membrane: This is seen outside the primary egg membrane & is secreted by the ovary. Examples: Chorion, corona radiata
- (3) Tertiary egg membrane: This is present outside the primarveca membrane uterus or the oviduct. Examples: Jelly coat, Shell & Shell membrane.
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