A polar body, during oogenesis, is formed:
I: | before fertilization. |
II: | after fertilization. |
1. | Only I | 2. | Only II |
3. | Neither I nor II | 4. | Both I and II |
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What is release at the time of ovulation?
1. primary oocyte
2. secondary oocyte
3. polar body
4. ootid
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The first menstrual cycle or first menstrual bleeding is known as:
1. menorrhagia.
2. menarche.
3. menopause.
4. amenorrhea.
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Identify the incorrectly matched pair [with respect to a 28 days cycle]:
1. beginning of menstrual flow - day 1
2. ovulation - day 14
3. LH surge - day 21
4. beginning of proliferative phase - day 5
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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. |
Identify the correct chronological order in which the following structures are formed:
a. blastocyst | b. morula | c. zygote |
1. | a,b,c | 2. | a,c,b |
3. | b,c,a | 4. | c,b,a |
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Which part of the blastocyst develops into the embryo proper?
1. inner cell mass.
2. trophoblast.
3. blastocele.
4. yolk sac.
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Milk secretion by mammary glands is under the control of:
1. | oxytocin | 2. | prolactin |
3. | estrogen | 4. | progesterone |
Consider the following statements:
I: | The uterine endometrium undergoes cyclical changes during the menstrual cycle. |
II: | Estrogen secreted during the pre-ovulatory phase of the menstrual cycle helps in the development of follicle. |
III: | hCG secreted by trophoblast cells helps in maintaining corpus luteum. |
Which of the above statements are true?
1. | I and II only | 2. | I and III only |
3. | II and III only | 4. | I, II, and III |
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Consider the following statements:
I: | The primary follicles present at birth carry primary oocytes arrested at meiosis I. |
II: | The secondary oocyte arrested at meiosis II is released at ovulation. |
III: | The second meiotic division is completed by the secondary oocyte just prior to the entry of the sperm into it. |
Which of the above statements are true?
1. | I and II only | 2. | I and III only |
3. | II and III only | 4. | I, II, and III |
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