First of all, let's find out how ejaculation is formed.The sexual function of men is mediation by the central nervous system and endocrine system, which is completed through a series of conditional reflexes.
There is a sexual center in the cerebral cortex, the sexual function center of the lower brain and the lower part of the vision, and the erectile center and ejaculation center inside the lumbosacral spinal cord.The erectile and ejaculation center is a close relationship with the sensory nerves and motor nerves to complete the movement of erectile and ejaculation.At the same time, the endocrine hormone produced by the inferior pituitary gland, adrenaline, and testicles also plays an important regulatory role in the development of reproductive organs.
Sexual excitement and sexual desire are often stimulated by the outside world. When the sexual impulses felt by sexual organs feel the sensory branch of the nervous system through the genital system, it is passed by the genitals and reaches the spinal cord through the sacral cluster.The ejaculation center in the brain stimulates that the sympathetic nerve to reach the spinal cord is stimulated. These impulses reach the scrotum, vasia tube, prostate and other organs related to male ejaculation through the nerves of the lower abdomen.Whether it is from the advanced center or the nerve impulses from the spinal cord reflection, it will be conveyed to the sacral cluster, and the perineal muscles of the perineal vixes of the motor nerve branches of the genital nerve will cause ejaculation characterized by rhythmic contraction.At this time, the front of the urethra was straight, and the strong contraction of the prostate rhythmic contraction, the sponge body muscle, the sciatic sponge body and the pubic tailbone muscles caused the semen to force the sperm block to the outside via the outer mouth of the urethra.
Reasons for adolescent premature ejaculation
1. Excess and premature motion leading to premature ejaculation
Regarding whether masturbation is good or bad, we have detailed explanation on the homepage.What we mentioned was the premature (8 & mdash; 16 years old) and the masturbation of transition. The central nervous system and endocrine system during this period were in the growth stage of growth and development.Excessive masturbation and transitional ejaculation lead to a large number of hormones required for growth and development.At the same time, it causes great damage to the mature nervous system, and the nerves of the prostate urethra and ejaculation pipes are worn.These injuries usually cause premature ejaculation.Young people who have experienced this often perform impulsive in initial contact, but they cannot erection. Even if the erection is weak, premature ejaculation will soon appear.
