How men take good care of their sexual organs

　　male Sexual organs, that is, the organs of the reproductive system, are the organs that produce germ cells, reproduce offspring, and secrete sex hormones to maintain secondary sexual characteristics. It includes the following main parts.

　　Testicles: main function is to produce sperm and secretion of male hormones (testosterone). The former combines with the egg and fertilizes it, which is an important material basis for the reproduction of offspring, while the latter is an important substance for maintaining male secondary sexual characteristics (auxiliary sexual characteristics).

　　Epididymis: The main function is to promote sperm development and maturation, as well as store and transport sperm. Sperm is produced from the seminiferous tubules of the testicles, but it lacks mobility and is not fertile. It still needs to continue to develop and mature. This stage mainly occurs in the epididymis. The epididymis secretes a liquid that directly feeds sperm maturation, called epididymal fluid. The liquid has high potassium, high concentration of glycerophosphate bile salts, high concentration of glycosidase, low pH, high osmotic pressure, low oxygen, and high carbon dioxide.

　　Vas deferens: It has strong peristaltic ability because the wall muscles of the tube are very thick. Its main function is to transport and excrete sperm. exist ejaculation time, sympathy nerve A large amount of norepinephrine-like substances are secretly released, causing the vas deferens to contract in a coordinated and powerful manner, and the sperm are rapidly transported to the seminal duct, ejaculatory duct and urethra.