Post Date December, 03 2023
The spermatogonia undergo multiple divisions and increase in size to become spermatocytes, which then divide and become sperm cells, and finally develop into mature sperm, namely, spermatogonia - spermatocyte - sperm cell - sperm. After the sperm matures, it falls off into the seminiferous lumen and slowly migrates to the epididymis. Some of it is stored here, and most of it moves to the vas deferens and its ampulla for storage until it is discharged during ejaculation.
Photo of testis: In the process of sperm formation, a suitable and relatively constant environment is required, and temperature is an important condition for sperm production. The appropriate and relatively constant ambient temperature is regulated by the contraction and relaxation of the scrotum. When the external temperature increases, the scrotum relaxes and expands the heat dissipation area to cool down; Conversely, when the external temperature decreases, the scrotum shrinks to keep warm.
Through this regulation, the temperature inside the scrotum remains 1.5~2.0 ℃ lower than that of the abdominal cavity. Human spermatogenesis is a continuous process. Spermatogenesis occurs every moment. That is to say, there are mature sperm in the body at any time. This is obviously different from the fact that women only have one egg mature every month.
Each gram of adult testicular tissue produces about 10 million sperm a day, and the weight of both testicles is about 30-40 grams, so the number of sperm produced per day can reach hundreds of millions.
