The membrane investing the ovum just outside | vedclass

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(A) In the developing ovarian follicle,the ovum (oocyte) is surrounded by a transparent,non-cellular layer known as the $Zona \ pellucida$. This layer

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Zona pellucida

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(A) In the developing ovarian follicle,the ovum (oocyte) is surrounded by a transparent,non-cellular layer known as the $Zona \ pellucida$. This layer is secreted by the oocyte itself and lies just outside the plasma membrane (vitelline membrane) of the ovum. The $membrana \ granulosa$ consists of follicular cells that surround the $Zona \ pellucida$. Therefore,the membrane immediately surrounding the ovum,which is located inside the $membrana \ granulosa$,is the $Zona \ pellucida$.

The membrane investing the ovum just outside the membrana granulosa is

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