Q. No.The endometrium is the most developed:
1. during the menstrual phase.
2. just after the menstrual phase.
3. just after ovulation.
4. late in the postovulatory phase.
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After being released the secondary oocyte must be fertilized within:
1. 1 hour.
2. 12 hours.
3. 24 hours.
4. 72 hours.
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The release of the sperms from the ampulla of the vas deferens is called:
1. erection.
2. emission.
3. ejaculation.
4. orgasm.
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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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 |
The epidermis and the dermis of the skin develops respectively from embryonic:
1. ectoderm, endoderm
2. ectoderm, mesoderm
3. endoderm, mesoderm
4. endoderm, ectoderm
Identify the organ system in humans that is derived from all the three embryonic germ layers:
1. cardiovascular system.
2. digestive system.
3. endocrine system.
4. muscular system.
Lactation after child birth is possible due to decrease in the secretion of:
1. HCG
2. oxytocin
3. FSH and LH
4. estrogen and progesterone
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