Whether men reach the orgasm of sexual intercourse are ejaculation, which is a complex physiological process.
When men were sexually impulsive, they were first excited at the erection center of the 骶 marrow, and the penis was erected.In the process of sexual intercourse, through the contact and friction of both sides, the sexual impulse is stronger. When it is accumulated to a certain degree, the ejaculation center is excited, so that men have ejaculation, an epididyry, vascular vitamin, semen, and prostate generate a series of contraction.The semen was pushed into the prostate first, and then the perineal muscles coordinated together and contracted rhythmicly. The semen in the urethra quickly ejected the in vitro to produce a sexual pleasure, which reached a orgasm.The entire process is dominated by the nervous system. As long as one of the links occurs, it can cause no ejaculation.
The cause of non -ejaculation is mostly caused by functional factors, accounting for about 90%of the number of cases; less organic reasons, about 10%, such as spinal cord injury, taking certain drugs that affect sexual nerves can cause ejaculation.
If there is a night exclusion, it may be that the functional is not ejaculated.The common reasons for functional non -ejaculation are as follows. You can compare it to see which cause is caused.
1. Insufficient sexual stimulation, insufficient sexual excitement.Sexual stimuli, including vision, hearing, tactile sensation, etc., is a necessary condition for inducing sexual excitement.Before sexual intercourse, lack of dismal activities such as speech communication and skin contact. The frequency, amplitude, and time of pumping friction after the penis enters the vagina is insufficient, sexual excitement is low, or the penis is not enough.
2. Long -term masturbation, the ejaculation center needs to be excited under the strong stimulation of masturbation.In normal sexual life, the stimulation of the vagina to the penis does not reach the stimulation of the penis when masturbation.
3. Psychological and psychological factors.It is believed that ejaculation can damage the body, and the subconscious does not want to ejaculate.Or due to the poor housing environment and great interference, you are nervous and excited.
(Editor in charge: Chen Bong)
