At the time of birth there ........... immature oocytes exist in the ovary of the female options 1) 1 to 2 millions 2) 2 to 3 millions 3) 2 to 4 milliond 4) None of the above
Answers
Answer:
I) is the answer 1 to2 million
Explanation:
The ovaries are filled with follicles. Follicles are fluid-filled structures in which the oocyte (also called egg) grows to maturity. Current knowledge indicates that females are born with their entire lifetime supply of gametes. At birth, the normal female ovary contains about 1-2 million/oocytes (eggs). Females are not capable of making new eggs, and in fact, there is a continuous decline in the total number of eggs each month. By the time a girl enters puberty, only about 25% of her lifetime total egg pool remains, around 300,000. Over the next 30-40 years of a female's reproductive life, the entire egg supply will be depleted. Although no one can know with absolute certainty the number of eggs remaining within the ovaries at any given time, most women begin to experience a significant decrease in fertility (the ability to conceive a child) around the age of 37. At the time of menopause, virtually no eggs remain.