Fetus is human embryo from the beginning of which of the following?
Correct answer: B. 3rd month
- A. 2nd month
- B. 3rd month
- C. 4th month
- D. 5th month
Explanation
An embryo is termed a fetus beginning in the 11th week of pregnancy, which is the 9th week of development after fertilization of the egg. A zygote is a single-celled organism resulting from a fertilized egg. The zygote divides to become a ball of cells that eventually implants in the wall of the uterus. From the beginning of the 3rd month of pregnancy, the human embryo is referred to as the fetus. Most of the major organs are formed by the 12th week of pregnancy and the remainder of the gestation period is taken up by growth.
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About Reproduction
Human reproduction covers the male and female reproductive organs, gamete formation, fertilization, implantation and hormonal regulation. The menstrual cycle includes ovarian and uterine changes controlled by pituitary and ovarian hormones, while sexually transmitted diseases are studied through their causes, transmission, symptoms, prevention and effects on fertility.
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