Question

A human female is born with a million eggs (primary oocyte) at the time of birth, only some 500 eggs get a chance of maturity. What is the density of the rest of the eggs?
A. Rest of the eggs differentiated back to theca and granulosa cells
B. Rest of the eggs nurture the dominant follicular cell
C. Rest of the eggs move out of the ovary and destroyed by leukocytes
D. Rest of the eggs break down and are absorbed i.e., degenerative follicular atresia.

Answer 1

Hint: Egg is the female gamete cell that contains haploid set of DNA, In a month an egg is released from the ovary of female body, When sperm fuses it inside the female body so zygote is formed which developed into new organism but this happened rarely.

Complete answer:
The egg is the largest cell in the human females that is around 0.2mm in diameter while male gamete is the smallest cell of the human body. The ovum contains a nucleus (germinal vesicle) and cytoplasm (ooplasm) as normal cells, its nucleus is composed of haploid DNA (23 chromosomes), and nucleolus (RNA location), the nucleolus of egg cell is also known as germinal spot. The egg cell is covered by the tough membrane called Zona pellucida. Corona radiata is found outside an egg.
Ovum is produced inside the ovary by the follicle cells, and the production of ovum is called oogenesis. An egg fertilized (fusion of egg and sperm) takes place at the fallopian tube or uterine tube, ampulla is the segment of uterine tube where sperm fertilized an egg.
Four lakhs of follicles cells in both the ovaries are found in a normal adult female. But only almost 500 egg cells reach maturity because most of the follicles cells are degenerative at the primary oocytes stage and the process of follicle degeneration is called follicular atresia and such follicles are known as atretic follicles.
So, the correct answer is “Option D”.

Note:
Menopause is a signal in the female that indicates the end of fertility. We can also call it the end of the menstrual cycle. In most women, the age of menopause is about 52 -55, but due to some reasons, it happens in adult age due to pelvic or ovarian damage.