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.
Second, cause premature ejaculation
The prostate plays an important role in the whole process, and prostate secrete prostaglandin E-1 and prostaglandin E-2.Prostaglandin E-1 promotes erection, and prostaglandin E-2 trigger ejaculation.The endometrium of the prostate is relatively thin, and the prostate secretion of prostate fluid with inflammatory prostate is affected.At this time, the value of prostaglandin E-1 is very low, and the value of prostaglandin E-2 is high.Premature ejaculation will occur.This is why people with prostatitis have weak erectiles and accompanied by premature ejaculation, which is why.
At the same time, the nerves of the prostate and ejaculation tube are harmed. The anger's urethral nerves are like a Pentium computer strong, with visual and auditory stimulation, which will stimulate the stimulating gland (such as the British anatomor of this gland said)Extract premature ejaculation substances are generated in pure urethra.This is why people who appear a large number of front guides before sex will soon ejaculate.
Third, premature ejaculation caused by insufficient sexual experience
If it is not often sperm and excessive masturbation, the semen generated by sexual organs due to secretion stimulus will accumulate in the body; whether it is the sperm or the prostate, the secretion of the seminal vesicles, the secretion of the semen will reach a certain amount;The excitement of the time, the output of semen is more than usual, the accumulation of semen itself is a kind of excitement and ejaculation stimulus; the sexual desire does not occur, making the body's sexual energy grow rapidly, so it is easy to induce premature ejaculation when sexual intercourse.This is a process of energy release.It's like pouring gasoline on dry wood, and immediately burned when Mars was encountered.
Fourth, premature ejaculation caused by other hearts and social factors
For some social phenomena, intense interpersonal relationships, overweight work and study pressure, life is extremely regular, family members are inconsistent, the living environment is too humble, dry sound, etc.When the nervous impulse reaches the sensory beam of the peripheral nerves and spinal cord, some nerve impulses pass through the special conducting pathway to the hill brain to reach the dermis sensation area of the cerebral cortex and other cortexes that cause cognition and emotional activity;Special conducting channels, on the one hand, are widely connected horizontally with other neurons in the brain stems and spinal cords, and on the other hand, they reach the corresponding cerebral cortex area via the lower mound brain and the edge system.In this way, when external stimuli acts on the human body, it can cause biochemical reactions such as the central nervous system itself and the widespread physiological reactions of the body, the extensive physiological reactions of each organ, and the corresponding neurotransmitter and nerve secretion.When a part of the nerve impulse to the cerebral cortex is aware of the individual, it causes complex psychological reactions.These psychological reactions often cause premature ejaculation of young people.
(Editor in charge: Internship Lin Yan)
