The Graafian follicle forms the corpus luteum after ovulation in the luteal phase. The Graafian follicle ruptures to release ovum and transforms... View Article
Spermatogenesis leads to the formation of four spermatids from each primary spermatocyte, whereas each primary oocyte produces only a single ovum... View Article
Each primary spermatocyte produces four sperms therefore 5 primary spermatocytes will produce 20 sperms. Primary spermatocytes undergo first... View Article
Regression of the corpus luteum indicates the absence of pregnancy and the end of the luteal phase. The corpus luteum secretes progesterone,... View Article
Leydig cells are located in the interstitial space present outside the seminiferous tubules in the testes. Leydig cells synthesise and secrete... View Article
FSH and LH are known as gonadotropins. They are released by the anterior pituitary. Gonadotropin-releasing hormone (GnRH) secreted by the... View Article
Graafian follicles rupture and release ovum during ovulation. The remains of the Graafian follicle transform into corpus luteum in the luteal... View Article
Primary oocytes get surrounded by the granulosa cells to form primary follicles. Each ovary contains around 60,000 - 80,000 primary follicles at... View Article
Acrosomes contain proteolytic enzymes such as hyaluronidase and acrosin. It helps sperm in penetrating the ovum through the zona pellucida layer.... View Article
No, Sertoli cells do not produce sperms. They are nutritive cells of the seminiferous tubules. They provide nutrition to germ cells. Also... View Article
LH or luteinizing hormone secreted from the anterior pituitary induces ovulation from Graafian follicles and helps in maintaining the corpus... View Article
Yes, sperm cells have numerous mitochondria in the middle piece. They provide the energy to facilitate sperm motility. Also Check: Why Is A... View Article
Polyspermy is blocked by the structural changes in the zona pellucida layer. On entry of one sperm, the zona pellucida layer of the ovum becomes... View Article
Only one sperm can fertilize an egg. When sperm comes in contact with the zona pellucida layer of the sperm, it induces changes in the membrane... View Article
The growing follicles secrete estrogens. LH and FSH (gonadotropins) stimulate the development of growing follicles and the secretion of... View Article
The longest phase in oogenesis is the diplotene stage of prophase I, where the first meiotic division gets arrested in the primary oocytes.... View Article
Leydig cells or interstitial cells are present in the testes outside seminiferous tubules. LH or luteinizing hormone secreted by the anterior... View Article
Secondary oocyte gives rise to the ovum or ootid. It is produced in the tertiary follicle by the first meiotic division in the primary oocyte... View Article
The secondary oocyte divides by second meiotic division and produces the ovum or egg and the second polar body. Most of the cytoplasm is retained... View Article