What Prevents More Than One Sperm from Entering the Egg?
When one sperm penetrates the zona pellucida, it brings about structural changes in the membrane that prevents other sperms from... View Article
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Where Is the Oogonium Located?
A pair of ovaries are present in females below the fallopian tubes. Oogonia or female gamete mother cells are located... View Article
What Is the Difference Between a Primary Oocyte and a Secondary Oocyte?
The primary oocyte is diploid and formed from oogonia after mitosis, whereas the secondary oocyte is formed from the primary... View Article
Do Polar Bodies Have Chromosomes?
Yes, polar bodies have chromosomes but contain very little cytoplasm and do not have the ability to be fertilised. The... View Article
How Many Eggs Come from a 50 Primary Oocyte?
Fifty primary oocytes give rise to 50 eggs. A primary oocyte undergoes meiosis I to produce a secondary oocyte and... View Article
How Many Primary Oocytes Are Present When a Female Infant Is Born?
Oogenesis starts during the embryonic stage itself. There are around two million primary oocytes present in the ovaries at the... View Article
What Hormone Stimulates Follicle Rupture?
Luteinizing hormone secreted by the pituitary gland stimulates the rupture of the follicle for ovulation. There is an LH surge... View Article
Does Oogenesis Start at Puberty?
No, oogenesis starts during embryonic development and no more oogonia are added after birth in the ovaries. Also Check: How... View Article
What Day of Cycle Is Progesterone Highest?
Progesterone level increases after ovulation and the level reaches the peak after 5-9 days of ovulation, i.e. around the 20-21st... View Article
What does sperm capacitation mean?
Capacitation is the process by which sperms gain the ability to penetrate the ovum or fertilise the ovum. Capacitation occurs... View Article
Where Does Sperm Gain Motility?
Sperms gain motility in the epididymis. Sperms formed in the seminiferous tubules are nonmotile and are released from seminiferous tubules... View Article
What Is the Role of Leydig Cells in Reproduction?
Leydig cells are present in the interstitial spaces in the testicular lobules. They secrete androgens, primarily testosterone. Androgens stimulate the... View Article
What Cells Are Produced by the Testes and Ovaries?
Testes and ovaries produce haploid gametes from primordial germ cells. Testes produce sperms, whereas ovaries produce eggs. Also Check: Why... View Article
What Happens to Graafian Follicle After Ovulation?
During ovulation, the Graafian follicle ruptures and releases the ovum. After ovulation, the Graafian follicle gets converted into corpus luteum,... View Article
What Is the Difference Between a Graafian Follicle and a Corpus Luteum?
Graafian follicle is the fully mature ovarian follicle, which ruptures at the time of ovulation to release an ovum. The... View Article
What Happens to the Remnants of a Ruptured Graafian Follicle in an Ovary?
Remnants of a ruptured Graafian follicle transform into corpus luteum. It secretes progesterone, which is required for the maintenance of... View Article
Does Progesterone Help With Implantation?
Yes, progesterone is secreted by the corpus luteum. It is required for the maintenance of the endometrium during implantation. Also... View Article
What Sertoli cells produce?
Sertoli cells are also called nurse cells as they nourish male germ cells in the seminiferous tubules. They secrete various... View Article
What Is the Function of Sertoli Cells and Leydig Cells?
Sertoli cells are present inside seminiferous tubules and provide nutrients to male germ cells. Leydig cells are interstitial cells present... View Article
What Is the Function of Leydig Cells?
Leydig cells synthesise and secrete androgens (testicular hormones). The pituitary gland secretes luteinizing hormone (LH), which stimulates Leydig cells to... View Article
