No new follicles develop in the luteal phase of the menstrual cycle because :
1. | Follicles do not remain in the ovary after ovulation |
2. | FSH levels are high in the luteal phase |
3. | LH levels are high in the luteal phase |
4. | Both FSH and LH levels are low in the luteal phase |
Select the correct sequence for the transport of sperm cells in the male reproductive system:
1. | Testis → Epididymis → Vasa efferentia → Vas deferens → Ejaculatory duct → Inguinal canal → Urethra → Urethral meatus |
2. | Testis → Epididymis → Vasa efferentia → Rete testis → Inguinal canal → Urethra |
3. | Seminiferous tubules → Rete testis → Vasa efferentia → Epididymus → Vas deferens → Ejaculatory duct → Urethra → Urethral meatus |
4. | Seminiferous tubules → Vasa efferentia → Epididymis → Inguinal canal → Urethra |
Extrusion of the second polar body from the egg nucleus occurs:
1. simultaneously with the first cleavage
2. after entry of sperm but before fertilization
3. after fertilization
4. before entry of sperm into the ovum
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 |
1. primary spermatocytes
2. secondary spermatocytes
3. spermatids
4. spermatogonia
Which one of the following is the correct match of the events occurring during the menstrual cycle?
1. | Ovulation - LH and FSH attain peak level 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 |
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 |
Given below is a diagrammatic sketch of a portion of human male reproductive system. Select the correct set of the names of the parts labelled A, B, C, D:
(a) |
Ureter |
Prostate |
Seminal vesicle |
Bulbourethral gland |
(b) |
Vas deferens |
Seminal vesicle |
Prostate |
Bulbourethral gland |
(c) |
Vas deferens |
Seminal vesicle trial gland |
Bulboure |
Prostate |
(d) |
Ureter |
Seminal vesicle |
Prostate |
Bulbourethral gland |
1. (a)
2. (b)
3. (c)
4. (d)
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 poor in calcium |
Which one of the following is the most likely root cause of why menstruation is not taking place in regularly cycling human female?
1. | Fertilization of the ovum |
2. | Maintenance of the hypertrophical endometrial lining |
3. | Maintenance of high concentration of sex-hormones in the blood stream |
4. | Retention of well-developed corpus luteum |