Q. No.A male can be infertile if:
1.
the sperm count is less than 20 million per ml of semen
2.
only 75% of the sperms are morphologically normal
3.
only 75 % of the sperm exhibit vigorous motility
4.
the Bulbourethral gland secretion is reduced to 75%
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A hormone secreted by the placenta and used in pregnancy to develop fetal metabolism and general growth and development is:
| 1. | Thyroxin | 2. | Cortisol |
| 3. | hPL | 4. | hCG |
The most accurate sequence of hormones secreted during a typical menstrual cycle will be:
| 1. | FSH, LH, estrogen, progesterone |
| 2. | LH, FSH, estrogen, progesterone |
| 3. | FSH, estrogen, LH, progesterone |
| 4. | FSH, estrogen, progesterone, LH |
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During embryonic development, which of the following structures actually differentiates into the embryo?
| 1. | Morula | 2. | Blastocyst |
| 3. | Inner cells mass | 4. | Trophoblast cells |
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At what stage of the follicular development does the primary oocyte complete its first meiotic division?
| 1. | Primary follicle | 2. | Secondary follicle |
| 3. | Tertiary follicle | 4. | Graafian follicle |
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Identify the correct statement:
| 1. | Sertoli cells help in spermiation |
| 2. | The sperms are stored in seminal vesicles in humans |
| 3. | Corpus Albicans secretes large amounts of progesterone |
| 4. | For normal fertility, at least 40% sperms must show vigorous motility |
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The number of eggs released by the mother if she gave birth to identical twins or fraternal twins would respectively be:
| 1. | 1 and 1 | 2. | 1 and 2 |
| 3. | 2 and 1 | 4. | 2 and 2 |
The level of which of the following hormones is increased several folds in the maternal blood when compared with a non-pregnant stage?
| 1. | hCG | 2. | hPL |
| 3. | Relaxin | 4. | Thyroxine |
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During embryonic development:
| 1. | the trophoblast cells help in the formation of the placenta and inner cell mass differentiates into the embryo |
| 2. | the trophoblast cells differentiate into the embryo and inner cell mass helps in the formation of the placenta |
| 3. | the trophoblast cells help in the formation of the placenta and both trophoblast cells and inner cell mass differentiate into the embryo |
| 4. | the trophoblast cells help in the formation of the placenta and differentiate into the embryo as well |
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The primary oocyte divides to produce:
| 1. | A large diploid secondary oocyte and a small haploid first polar body |
| 2. | A large haploid secondary oocyte and a small haploid first polar body |
| 3. | A large diploid secondary oocyte and a small haploid second polar body |
| 4. | A large haploid secondary oocyte and a small haploid secondary polar body |
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