Q. No.The correct sequence of development of embryonic stages in humans is:
1.
Zygote → Blastula → Blastocyst
2.
Zygote → Gastrula → Blastula
3.
Zygote → Blastocyst → Gastrula
4.
Zygote → Gastrula → Blastocyst
The first movements of the fetus and the appearance of hair on the head are usually observed during:
| 1. | 2nd month | 2. | 3rd month |
| 3. | 5th month | 4. | 6th month |
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Which of the following is not produced in the woman only during pregnancy?
| 1. | hCG | 2. | hPL |
| 3. | Relaxin | 4. | Oxytocin |
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In human beings, the embryo heart is formed about after ________ of pregnancy.
| 1. | One month | 2. | Two months |
| 3. | First trimester | 4. | Second trimester |
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The signals of fetal ejection reflex originate from:
1. Maternal pituitary
2. Maternal hypothalamus
3. Fully developed fetus and placenta
4. Fetal pituitary
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The milk produced during the initial few days of lactation, called colostrum, is essential for the newborn as colostrums contains:
| 1. | a Large amount of glucose | 2. | Anti-infective antibodies |
| 3. | Fats | 4. | Various hormones |
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After implantation, finger like projections appear on the trophoblast cells called:
| 1. | Chorionic villi | 2. | Allantois |
| 3. | Decidua | 4. | Sinusoids |
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Which of the following hormones is not secreted by the human placenta?
| 1. | hCG | 2. | hGH |
| 3. | hPL | 4. | Progesterone |
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The fetal body is covered with fine hair, eyelashes separate, and eyelashes are formed by the end of:
| 1. | 20 weeks | 2. | 24 weeks |
| 3. | 28 weeks | 4. | 30 weeks |
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What part of the early embryo differentiates into the three germ layers?
| 1. | The trophoblast cells | 2. | Inner cell mass |
| 3. | Both | 4. | None |
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