Question

when a follicle is called secondary and tertiary??

class 12th

biology chapter 3

humar reproduction

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Answer 1

Answer:

When primary follicles survive, secondary follicles with follicular epitheliums encompassing multiple rows are engendered. This is now called the stratum granulosum. In the secondary follicles a glycoprotein layer, the pellucid zone, between the oocyte and follicular epithelium becomes visible. Cytoplasmic processes of the granulosa cells that lie upon it reach the oocyte through the pellucid zone and thereby assure their maintenance function. Outside the basal lamina the stroma ovarii organizes itself to become theca folliculi cells.

Explanation: