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Life processes
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Nutrition
Types of nutrition
Nutrition in human beings
Organs of the system
Process of digestion
Facts about human digestion
Questions
Respiration
Types of respiration
Respiration in human beings
Organs of the system
Process of respiration
Facts about human respiratory system
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Excretion
Excretion in human beings
Organs of the system
Process of excretion
Facts about human excretion
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Reproduction
Types of reproduction
Reproduction in human beings
Organs of the system
Process of reproduction
Facts about human reproduction
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Life processes
Home
Nutrition
Types of nutrition
Nutrition in human beings
Organs of the system
Process of digestion
Facts about human digestion
Questions
Respiration
Types of respiration
Respiration in human beings
Organs of the system
Process of respiration
Facts about human respiratory system
Questions
Excretion
Excretion in human beings
Organs of the system
Process of excretion
Facts about human excretion
Questions
Reproduction
Types of reproduction
Reproduction in human beings
Organs of the system
Process of reproduction
Facts about human reproduction
Questions
References
More
Home
Nutrition
Types of nutrition
Nutrition in human beings
Organs of the system
Process of digestion
Facts about human digestion
Questions
Respiration
Types of respiration
Respiration in human beings
Organs of the system
Process of respiration
Facts about human respiratory system
Questions
Excretion
Excretion in human beings
Organs of the system
Process of excretion
Facts about human excretion
Questions
Reproduction
Types of reproduction
Reproduction in human beings
Organs of the system
Process of reproduction
Facts about human reproduction
Questions
References
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.
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