- 1(current)
Q. No.The simultaneously occurring events during the menstrual cycle are:
| 1. | peak of LH secretion and menstrual flow |
| 2. | follicular development and the uterus becoming highly secretory |
| 3. | formation of corpus Albicans and an increase in progesterone secretion |
| 4. | Proliferation stage of the uterus and increased estrogen production |
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Which one of the following is the most likely reason for the regular menstruation cycle not occurring in females?
| 1. | Fertilisation of the ovum |
| 2. | Maintenance of the hypertrophical endometrial lining |
| 3. | Maintenance of a high concentration of sex hormones in the bloodstream |
| 4. | Retention of well-developed corpus luteum |
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What maintains the corpus luteum after fertilization?
| 1. | release of HCG by the trophoblast to maintain the corpus luteum. |
| 2. | production of LH by the maternal pituitary. |
| 3. | maintenance of the corpus luteum by prolactin. |
| 4. | production of estrogen by the adenohypophysis. |
| Column I | Column II | |
| 1. | Ovulation | LH and FSH attain peak levels and sharp fall in the secretion of progesterone |
| 2. | Proliferative phase | Rapid regeneration of myometrium and maturation of Graafian follicle |
| 3. | Development of corpus luteum | Secretory phase and increased secretion of progesterone |
| 4. | Menstruation | Breakdown of myometrium and ovum not fertilized |
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Which part of the ovary in mammals acts as an endocrine gland after ovulation?
| 1. | Graafian follicle | 2. | Stroma |
| 3. | Germinal epithelium | 4. | Vitelline membrane |
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During a menstrual cycle, which of the following hormones reaches its maximum peak secretion level during the luteal phase of the cycle?
| 1. | FSH | 2. | LH |
| 3. | Estrogen | 4. | Progesterone |
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The direct cause of ovulation during the menstrual cycle is:
| 1. | A sharp fall in the levels of estrogen |
| 2. | A dramatic rise in the secretion of FSH |
| 3. | The beginning of the secretion of progesterone |
| 4. | A surge in the secretion of LH |
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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 |
| I: | During pregnancy, there is no menstruation. |
| II: | Corpus luteum degenerates early in the event of fertilization |
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct
- 1(current)
Q. No.
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