The Male Reproductive System
What does the system do?
Inside the testes small cells called sperm are created. Sperm is created by little germ cells and it takes up to seventy days for the cells to become full mature sperm cells. While reproducing the sperm is carried from the testes into the vas deferens which is a tube that leads to the prostate gland. As the sperm gets there it's covered by a protective seminal fluid which is called semen. As that happens the sperm and semen travel down a second tube called the urethra. The urethra is located in the penis which is another reproductive organ. It tells the brain to start releasing sperm. As the sperm and semen reach the end of the urethra it's released from the body. When it's released that term is called "ejaculation"
Once out the body the sperm have to find their way to the ovaries to get to the egg cell. Over 40 to 60 million sperm cells are released and only one will be able to get to the egg cell. As one sperm gets to an egg the egg cell will create a protective wall around itself preventing any other sperm from entering and the rest die off.
When the last remaining sperm cell is inside it'll shed it's outer layer and exchange gametes (genetic material) with the egg.
Another one is cryptorchidism, which means that the testes are stuck in the stomach and do not descend from the body. If they're inside the stomach for too long then there's a high chance of the testicles developing cancer. This usually happens in newborn infants, but after four to six months the testes will go back to their original position. If that's not successful then there's a series of hormonal injections.
The next and final one is prostate cancer. Unlike testicular cancer which is common in younger men prostate cancer is more common in older men. About 99% of diagnosis come from men over 50. It can come from genetics or lifestyle choices. For example if you lack vitamin D in your body your chances of prostate cancer increase. When diagnosed the treatment is pretty much the same as all cancer treatments.