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
Fallopian tubes connect the ovaries to the uterus. The internal lining of the fallopian tubes is made up of ciliated epithelium. They have cilia,... View Article
Spermatogenesis begins at puberty with increased secretion of gonadotropin-releasing hormone (GnRH). GnRH stimulates the secretion of LH and FSH... View Article
Ovaries and testes are the primary sex organs in females and males, respectively. They act as endocrine glands also and secrete various hormones... View Article
Testes are the primary sex organ in males. It also acts as an endocrine gland and produces and secretes androgens such as testosterone. The... View Article
The acrosome is the cap-like structure present at the head of the sperm. It contains various proteolytic enzymes such as hyaluronidase and... View Article
Graafian follicle is the fully matured follicle, which ruptures and releases the ovum during the ovulatory phase. After ovulation, the Graafian... View Article
Sperm formation takes place in testes. The formation of sperms from immature germ cells or spermatogonia is called spermatogenesis. Spermatogonia... View Article
The length of the fully mature human spermatozoa is around 55-65 µm. It is a motile cell made up of the head, neck, middle piece and tail.... View Article
No, fertilisation takes place in the ampullary region of the fallopian tubes. The main parts of the female reproductive system are ovaries,... View Article