MICROANATOMY

Detailed explanation-1: -An oocyte is an immature egg (an immature ovum ). Oocytes develop to maturity from within a follicle. These follicles are found in the outside layer of the ovaries. During each reproductive cycle, several follicles begin to develop.

Detailed explanation-2: -Primordial follicles, which consist of a primary oocyte surrounded by a single layer of flattened cells, develop in the fetus and are the stage that is present in the ovaries at birth and throughout childhood. Beginning at puberty, follicle-stimulating hormone stimulates changes in the primordial follicles.

Detailed explanation-3: -A developing egg is called an oocyte. Its differentiation into a mature egg (or ovum) involves a series of changes whose timing is geared to the steps of meiosis in which the germ cells go through their two final, highly specialized divisions.

Detailed explanation-4: -Primary oocytes are usually formed by the 5th month during fetal development. It enters the prophase of meiosis-I and remains dormant till puberty. Each primary oocyte along with the surrounding layer of granulosa cells makes up the primary follicle. Females are born with all of their primary oocytes.