Q. No.Identify the human development stage shown below as well as the related right place of its occurrence in a normal pregnant woman, and select the right option for the two together:
Developmental stage
Site of occurrence
1.
Blastocyst
Uterine wall
2.
8 cells morula
Starting point of Fallopian tube
3.
Late morula
Middle part of Fallopian tube
4.
Blastula
End part of Fallopian tube
Developmental stage
Site of occurrence
1.
Blastocyst
Uterine wall
2.
8 cells morula
Starting point of Fallopian tube
3.
Late morula
Middle part of Fallopian tube
4.
Blastula
End part of Fallopian tube
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What is the correct sequence of sperm formation?
1. Spermatid, Spermatocyte, Spermatogonia, Spermatozoa
2. Spermatogonia, Spermatocyte, Spermatozoa, Spermatid
3. Spermatogonia, Spermatozoa, Spermatocyte, Spermatid
4. Spermatogonia, Spermatocyte, Spermatid, Spermatozoa
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Capacitation refers to change in the
1. Sperm before fertilisation
2. Ovum before fertilisation
3. Ovum after fertilisation
4. Sperm after fertilisation
Which of these is not an important component of initiation of parturition in humans?
1. Increase in oestrogen and progesterone ratio
2. Synthesis of prostaglandins
3. Release of oxytocin
4. Release of prolactin
Changes in GnRH pulse frequency in females is controlled by circulating levels of
1. Estrogen and progesterone
2. Estrogen and inhibin
3. Progesterone only
4. Progesterone and inhibin
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The amnion of mammalian embryo is derived from
1. Mesoderm and trophoblast
2. Endoderm and mesoderm
3. Ectoderm and mesoderm
4. Ectoderm and endoderm
Hormones secreted by the placenta to maintain pregnancy are
1. hCG,hPL, progestogens, estrogens
2. hCG, hPL, estrogen, relaxin, oxytocin
3. hCG, hPL, progestogens, prolactin
4. hCG, progestogens, estrogens, glucocorticoids
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The difference between spermiogenesis and spermiation is:
| 1. | In spermiogenesis, spermatozoa from sertoli cells are released into the cavity of seminiferous tubules, while in spermiation, spermatozoa are formed. |
| 2. | In spermiogenesis, spermatozoa are formed, while in spermiation, spermatids are formed. |
| 3. | In spermiogenesis, spermatids are formed, while in spermiation, spermatozoa are formed. |
| 4. | In spermiogenesis, spermatozoa are formed, while in spermiation, spermatozoa are released from sertoli cells into the cavity of seminiferous tubules. |
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Match the items given in Column I with those in Column II and select the correct option given below:
| Column I | Column II | ||
| (a) | Proliferative Phase | (i) | Breakdown of the endometrial lining |
| (b) | Secretory Phase | (ii) | Follicular Phase |
| (c) | Menstruation | (iii) | Luteal Phase |
| (a) | (b) | (c) | |
| 1. | (ii) | (iii) | (i) |
| 2. | (i) | (iii) | (ii) |
| 3. | (iii) | (ii) | (i) |
| 4. | (iii) | (i) | (ii) |
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For normal fertility, what percent of the sperm in ejaculate must exhibit vigorous motility?
| 1. | 20 | 2. | 30 |
| 3. | 40 | 4. | 60 |
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