There is a muscle sheath in the scrotum which lowers the scrotum when the temperature is high and hugs it tighter to the body when the temperature is low.
It tightens up in the cold and loosens in the heat. It isn't much, but it does make a difference.
They are cooler being outside of the body. That's the way we have evolved. There is no way to answer why this is any more than why we have 5 fingers and toes. It just is.
The pouch of skin that contains the testes is called the scrotum.
To keep the temperature of the testes slightly less than our body temperature. ie.It maintaings 35-36 degree Celsius.
No, I think it's the other way around. The testes hang out so they can be a bit cooler than the body.
the scrotum.
If the testes are not maintained at a temperature about 2 °C lower than body temperature the process of spermatogenesis will not take place, so that is why it is important for the testes to descend into the scrotum during maturation.
The answer is the scrotum, the testis are in the scrotum.
The scrotum is a pouch that holds the testes and parts of the spermatic cord. Its muscular activity regulates the temperature of the testes.
Because sperm function at 35 degrees where as your normal body temp is 36 so the scrotum is meant to keep the sperm slightly cooler then the rest of the body. That is also why when a male becomes cold the scrotum becomes smaller to bring the testes closer to the body to keep them warmer thus keeping the sperm warmer.
The testes are located outside of the body because the bodies temperature is too high for the testes and the scrotum has a lower temperature for them to be able to produce sperm.
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.
If the testes are not maintained at a temperature about 2 °C lower than body temperature the process of spermatogenesis will not take place, so that is why it is important for the testes to descend into the scrotum during maturation.
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.