15 Amazing facts about human reproduction

1. At birth- female ovaries contain 2-4 million eggs.

2. After birth- new eggs are not added.

3. On reaching puberty- release one egg each month (from menarche till menopause).

4. About 400 eggs are released in this period and others degenerate.

5. Eggs ovulated at 50 years age are older and pregnancy due to these eggs can cause defects in child.

6. The reproductive system contains the largest and smallest human cells (the ovum and the sperm).

7. The average penis size is less than 6 inches long.

8. Men have vastly more gametes than women.

9. Higher-pitched men may win in the sperm department.

10. Fallopian tubes are about 12 centimeters long and only wide as a sewing needle.

11. A human female can give birth to about 35 babies in a lifetime.

12. In a fetus, fingerprints are acquired at the age of 3 months (first trimester).

13. During pregnancy, uterus will expand up to 500 times its normal size.

14. The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.

15. The medium of the vagina is as acidic as beer or tomatoes, averaging about 4 on the pH scale.