1. Spermatogonial proliferation and division: the most primitive stage of the spermatozoa is called spermatogonia, which is the stem cell that produces spermatozoa, and it is located in the seminiferous epithelium of the varicocele. Initially, spermatogonia proliferate in the form of mitosis, 1 split into 2, 2 into 4. After 6 divisions, 1 spermatogonial cell proliferates into 64, which are then called primary spermatocytes.
2. Meiosis of spermatogonia into spermatocytes: the primary spermatogonia continues to divide. However, this time it is meiosis, that is, one primary spermatocyte divides into two secondary spermatocytes, but unlike the proliferation of spermatogonia, because the chromosomes in the nucleus are not replicated. Therefore, each secondary spermatocyte carries only half the original number of chromosomes, i.e. 23 chromosomes, including one sex chromosome. The cell size is also smaller than that of the primary spermatocyte. Immediately following this process, the secondary spermatocyte undergoes another maturation division and becomes two spermatocytes. As a result, one primary spermatogonia divides into four spermatocytes, each carrying a single ploidy of chromosomes. At this point, one spermatogonia becomes 256 sperm cells.
3. Spermatogenesis stage: While the above cell division is going on, the sperm cells have gradually moved closer to the lumen of the vas deferens. At this time, the sperm cells are still continuing to develop, just no longer divide, but in the morphology of the complex changes into a head, tail sperm, and into the lumen of the tube. At this point the development of the spermatozoon in the testes is complete and takes about 64 days. During sperm formation, support cells located in the epithelium of the seminiferous tubules play an important role in support, protection and nutrition. The supporting cells also secrete a kind of androgen-specific binding globulin, thus making the androgen concentration in the seminiferous tubules much higher than that in the blood, and the spermatogenic cells are able to differentiate into spermatozoa in this suitable microenvironment.
The spermatozoa then travel down the vas deferens into the epididymis, where they remain in the head of the epididymis for about 2-3 weeks before they develop into mature spermatozoa, which ultimately have the ability to move and fertilize. So it takes about 90 days for a spermatogonia to develop into a mature sperm
Sperm production is in the testes, so roasting the lumbar region with the Infrared Magnetic Pulse Therapeutic Apparatus will not have an effect on the spermatozoa.