If sperm count and motility is too low, he needs to get it done in-vitro.
No, the size is irrelevant for having sex.
Males have two testes because it allows for the production of sperm. Having two testes provides redundancy in case one is damaged or compromised. Additionally, the two testes are able to produce a large amount of sperm, increasing the chances of successful fertilization.
If the testes don't descend (drop) after birth, then the male can become sterile (infertile), and the risk of testicular cancer increases.
Absolutely ! A man can still father a child if he has only one testicle.
The testes can only produce functional semen at a certain temperature. If they were in the abdomen, the environment would be too warm. Since the scrotum is only a thin piece of skin, the testes are contained in an environment that is the perfect temperature.
It's due to the cooling effect of having the testes outside the main portion of the body. Testes need a slightly lower temperature than the rest of the body, for ideal functioning. Overheating will reduce fertility.
Testes
A normal body cell transfers to the testes and become a sex cell.
Yes, most likely having a testicular hernia will not damage the ability of the testes to make and transport spermatazoa.
Testicles is the synonym for testes.
The upper part of the testes where sperm cells are stored until they become matured is called the epididymis. It is a coiled tube where sperm undergo maturation and are stored until they are ready to be ejaculated.
Spermatozoa develop in the seminiferous tubules of the testes within the male reproductive system. Initially, they are produced in the testes as germ cells and undergo a process of maturation called spermatogenesis to become fully functional spermatozoa.