Q. No.What structure gets implanted on the wall of the uterus during embryonic development?
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In the given diagram, identify A, B, C, and D respectively:
| 1. | LH, FSH, Progesterone and Estrogen |
| 2. | FSH, LH, Estrogen and Progesterone |
| 3. | Estrogen, Progesterone, LH and FSH |
| 4. | Progesterone, Estrogen, FSH and LH |
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In the given diagram, the part of the female reproductive system that undergoes cyclical changes with changes in the secretion of gonadotropins and gonadal steroids during the menstrual cycle is represented by:
1. A
2. B
3. C
4. D
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Which of the structures shown in the following diagram contributes the source of nutrition for the sperms ejaculated in the semen?
1. A
2. B
3. C
4. D
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The phase of menstrual cycle in humans that lasts for 7-8 days is:
1. follicular phase
2. ovulatory phase
3. luteal phase
4. menstruation
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Which one of the following statements with regard to embryonic development in humans is correct?
| 1. | Cleavage divisions bring about a considerable increase in the mass of protoplasm. |
| 2. | In the second cleavage division, one of the two blastomeres usually divides a little sooner than the second. |
| 3. | With more cleavage divisions, the resultant blastomeres become larger and larger. |
| 4. | Cleavage division results in a hollow ball of cells called morula. |
Women who consume the drug thalidomide for relief from vomiting during the early months of pregnancy give birth to children with :
| 1. | No spleen | 2. | Harelip |
| 3. | Extra fingers and toes | 4. | Underdeveloped limbs |
A cross-section at the midpoint of the middle piece of a human sperm will show :
| 1. | centriole, mitochondria, and 9+2 arrangement of microtubules |
| 2. | centriole and mitochondria |
| 3. | mitochondria and 9+2 arrangement of microtubules |
| 4. | 9+2 arrangement of microtubules only |
Which one of the following events is correctly matched with the time period in a normal menstrual cycle?
| 1. | Release of egg: 5th day |
| 2. | Endometrium regenerates: 5 - 10 days |
| 3. | Endometrium secretes nutrients for implantation: 11-18 days |
| 4. | Rise in progesterone level: 1 - 15 days |
Which of the following is true regarding sperm?
1. Fertilizin : For penetrating egg membrane
2. Hyaluronidase : For penetrating egg membrane
3. Acrosin : Dissolves corona radiata
4. Capacitation : Takes place in penis
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