What is the principle of ejaculation?

Every male develops during puberty and then gradually begins to experience nocturnal emission. Especially for those who have not yet had sexual intercourse, they may be unfamiliar with the principle behind it and may not know what causes the need for ejaculation. In the following article, we will learn about it.

Ejaculation---it can be divided into two steps:

The first step is sperm transfer: when sexual stimulation becomes extremely strong, the reflex center located in the 1st and 2nd segments of the spinal cord sends sympathetic nerve impulses to the genitals, causing the epididymal vas deferens to contract, moving the sperm to the posterior urethra, then the smooth muscles around the prostate contract, and then the seminal vesicles also contract, expelling the prostatic fluid and seminal vesicle fluid and pushing the semen forward.

The second step is ejaculation: After the posterior urethra is stimulated, it sends a signal that is transmitted to the sacral segment of the spinal cord through the pudendal nerve. The spinal cord then sends rhythmic impulses to the sciatic cavernous muscles and the bulbar cavernous muscles, causing them to contract, resulting in a rhythmic wave-like increase in the internal pressure of the erectile tissue, and ejaculates semen out of the body through the urethra.

During ejaculation, the bladder spasm contracts, closing the passage between the bladder and the urethra to prevent semen from entering the bladder or urine from entering the urethra. The ejaculation process gives men a strong sense of pleasure and leads to orgasm. After ejaculation, the sympathetic nerve impulse causes the penile arteries to contract and the veins to relax. The blood in the erectile tissue decreases rapidly, the internal pressure decreases, and the erection disappears. After that, the man is in the refractory period for a period of time, and cannot have an erection or ejaculation.

After understanding the principle of the matter, first of all, the spirit can play a role in the combination of sperm and egg. This is a brain signal that tells you that you are about to ejaculate. If you ejaculate frequently, it may be a sexual dysfunction, and you should seek treatment.