Q. No.After leaving the testes, spermatozoa pass sequentially through the :
1.
seminiferous tubule, rete testis, efferent ductule, and epididymis
2.
epididymis, ductus deferens, seminal vesicle, and ejaculatory duct
3.
membranous urethra, prostatic urethra, and spongy urethra
4.
epididymis, ductus deferens, ejaculatory duct, and urethra
The process of maturation of spermatids to sperms and the cells that facilitate this process are respectively:
1. spermiogenesis; sustentacular cells
2. spematocytogenesis; spermatogonia
3. spermiation; Sertoli cells
4. spermatogenesis; interstitial cells
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Ectopic pregnancies are referred to as :
| 1. | pregnancies with a genetic abnormality |
| 2. | implantation of the embryo at a site other than the uterus |
| 3. | implantation of a defective embryo in the uterus |
| 4. | pregnancies terminated due to hormonal imbalance |
Which one of the following is not the function of the placenta?
| 1. | It facilitates the supply of oxygen and nutrients to the embryo |
| 2. | It secretes oestrogen |
| 3. | It facilitates the removal of carbon dioxide and waste material from the embryo |
| 4. | It secretes oxytocin during parturition |
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In a normal pregnant woman, total gonadotropin activity was assessed. The expected result was :
| 1. | High level of circulating FSH and LH in the uterus to stimulate implantation of the embryo |
| 2. | High level of circulating HCG to stimulate endometrial thickening |
| 3. | High levels of FSH and LH in the uterus to stimulate endometrial thickening |
| 4. | High level of circulating HCG to stimulate oestrogen and progesterone synthesis |
Which one of the following statements about morula in humans is correct?
| 1. | It has an almost equal quantity of cytoplasm as an uncleaved zygote but much more DNA |
| 2. | It has far less cytoplasm as well as less DNA than in an uncleaved zygote |
| 3. | It has a more or less equal quantity of cytoplasm and DNA as in an uncleaved zygote |
| 4. | It has more cytoplasm and more DNA than an uncleaved zygote |
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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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| 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 one of the following statement is incorrect about menstruation?
| 1. | During normal menstruation, about 40 mL of blood is lost |
| 2. | The menstrual fluid can easily clot |
| 3. | At menopause in the female, there is, an especially, abrupt increase in gonadotropic hormones |
| 4. | The beginning of the cycle of menstruation is called menarche |
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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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