Q. No.
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The placenta is connected to the embryo through:
| 1. | Ligaments | 2. | Portal vein |
| 3. | Umbilical cord | 4. | Mesentery |
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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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Consider the two statements:
| I: | Presence of HCG in the urine is a reliable indicator of pregnancy in a female. |
| II: | HCG promotes the maintenance of the corpus luteum during the beginning of the pregnancy. |
1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. Only I is correct.
4. Both I and II are incorrect.
| Assertion (A): | Progesterone is sometimes called the "hormone of pregnancy". |
| Reason (R): | It is secreted in large amounts first by corpus luteum and later by placenta during pregnancy. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
| I: | Umbilical cord consists of two umbilical veins and one umbilical artery. |
| II: | Yolk sac is the site of earliest erythropoiesis during foetal life. |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
| 1. | The placenta | 2. | The fetus |
| 3. | Maternal ovary | 4. | Maternal pituitary |
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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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During pregnancy the levels of thyroxin:
1. Increase several folds in maternal blood
2. Increases several folds in fetal blood
3. Decreases several folds in maternal blood
4. Decreases several folds in fetal blood
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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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