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 |
In human during fertilization a sperm firstly comes in contact with which layer of ovum?
1. zona pellucida
2. vitelline membrane
3. Jelly coat
4. zona radiate
The middle piece of the sperm contains:
1. proteins
2. centriole
3. nucleus
4. mitochondria
1. | These seminiferous epithelium contains only proliferative cells |
2. | Functional compartmentalization of the seminiferous epithelium depends on tight junctions |
3. | The interstitial tissue contains few capillaries |
4. | The seminiferous epithelium contains numerous capillaries |
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
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 |
The extra embryonic membranes of the mammalian embryo are derived from
1. Trophoblast
2. Inner cell mass
3. Formative cells
4. Follicle cells