This is an interesting question. Sperm do best at temperatures slightly below the temperature of the body. This is why the testes are located outside of the abdomen. The scrotal muscles tense and relax to control the distance of the testes from the body. If it is colder they will pull the testes closer to take advantage of body heat. If it gets hotter they will relax to allow the testes to get further from the warmth of the body. Hope this helps! (BTW, they also have a reflexive action that pulls the testes close to the body when something touches the inner thigh. This does nothing to maintain a constant temperature but it does help protect them from injury.)
The scrotal sac is made of tissue that can tighten or loosen depending on the temperature of the testes themselves. This is helpful in regulating temperature of the testes because the scrotal sac will contract bringing the testes closer to the body for warmth and let the testes descend to cool off, therefore maintaining a steady temperature that is optimum for sperm production.
Dartos
It's the muscle that surrounds the testicles and spermatic cord. It twitches involuntarily when the cremasteric reflex is stimulated, or to raise the testicles closer to the body when it's cold or the man is sexually excited. It can also be twitched voluntarily in most men using Kegels, where the muscles that tighten the anus, and stop the flow of urine, are contracted. Some men can also contract it by contracting their abdominal muscles.
Healthy sperm production should have a scrotal temperature that is slightly lower than the body's core temperature, around 2-4 degrees Celsius lower. Maintaining this lower temperature is important for optimal sperm production and quality.
The primary reason the scrotal sac descends is to regulate the temperature of the testes for optimal sperm production. The lower temperature outside the body allows the testes to function properly and produce viable sperm.
Sperm production requires an environment that is neither too hot or too cold. The cremaster muscles are those that will raise or lower the scrotal sac. If the testes are too warm, the cremaster muscles loosen and the scrotal sac will hand lower. If the testes are too cold, the cremaster muscles will control and draw them up closer to the body for warmth. So it's all about temperature control.
To keep sperm cooler than core body temperature.
The scrotal sac hangs outside the body because sperm production requires a lower temperature than body temperature. However, this exposes the testes to potential injury from external forces and pathogens.
There are 10560 feet in a scrotal mile as it is twice as awesome as a regular mile!
"Scrotol" is likely a misspelling or a typo. It may have been intended to be "scrotal," which pertains to the scrotum, the pouch of skin that holds the testicles in males. If you have a specific question about the scrotal area, feel free to ask for more information.
testes are the two endocrine glands in the scrotal sac of a male.
Abnormal accumulation of fluid in the scrotal sac is called hydrocele.
The two glands enclosed in the scrotal sac of a male are the testes and the epididymis. The testes are responsible for producing sperm and testosterone, while the epididymis stores and transports sperm.