Q. No.Seminal plasma in humans is rich in:
1. fructose, calcium and certain enzymes
2. fructose and calcium but has no enzymes
3. glucose and certain enzymes but has no calcium
4. fructose and certain enzymes but is poor in calcium
1. fructose, calcium and certain enzymes
2. fructose and calcium but has no enzymes
3. glucose and certain enzymes but has no calcium
4. fructose and certain enzymes but is poor in calcium
The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is
1. spermatocyte spermatogonia spermatid sperms
2. spermatogonia spermatocyte spermatid sperms
3. spermatid spermatocyte spermatogonia sperms
4. spermatogonia spermatid spermatocyte sperms
| 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 |
In humans, at the end of the first meiotic division, the male germ cells differentiate into
1. primary spermatocytes
2. secondary spermatocytes
3. spermatids
4. spermatogonia
Which extra embryonic membrane in humans prevents desiccation of the embryo inside the uterus?
1. Chorion
2. Allantois
3. Yolk sac
4. Amnion
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 |
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 |
In the human female, menstruation can be deferred by the administration of:
1. LH only
2. Combination of FSH and LH
3. Combination of estrogen and progesterone
4. FSH only
Withdrawal of which of the following hormones is the immediate cause of menstruation?
| 1. | Estrogen | 2. | FSH |
| 3. | FSH-RH | 4. | Progesterone |
An oocyte is released from the ovary under the influence of LH :
| 1. | after completing meiosis and before the polar bodies are released |
| 2. | after completing meiosis I and before the release of the polar body |
| 3. | after completing meiosis |
| 4. | after completing meiosis I and after the release of the polar body |
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