Knowing complete information about the reproductive system is a subject that every person should have complete information about. Because having information helps him in the treatment and prevention of sexual diseases. It also prevents the person from having sexual abnormalities and deviations. In this article, we explain all the necessary information about the male reproductive system.
Male genitalia
.
1- Scrotum (scrotum): It is a muscular skin bulge that is stretched and wrinkled and the testicles are inside it. Its main task is to keep the required temperature of the sperms produced by the testicles constant. (It is usually two degrees lower than body temperature)
.
2- Testicles: The testicles are normally smooth and oval in shape and somewhat hard. Inside it, there are many tortuous tubes that produce sperm, which are located under the scrotum and inside the scrotum.
The testicles have two main tasks: the synthesis and secretion of sex hormones (testosterone) and the production of sperm
.
3- Seminal duct (epididymis): This duct is in the form of a band-shaped mass and is stretched on the back part of the testicle. After entering the sperm duct, the sperm is stored in it and maintains its fertility properties even for a very long time (several months).
.
4- Ductus deferens: It is the continuation of the epididymis duct, which starts from the end of the epididymis and leads the sperm to the ejaculatory duct.
.
5- Seminal vesicles: There are two small glands located behind the bladder and on both sides of the prostate. The function of the seminal vesicle is to produce nutritious liquid (sugar, protein,…) to feed the sperms.
.
6- Prostate Gland: It is a small gland that is almost like a cone and its base is placed under the neck of the bladder and the urethra passes through it. The main function of the prostate gland is that it contracts during ejaculation and secretes thin milky secretions that contain calcium, phosphate ions, etc. is.
During the discharge of semen, the prostate gland is contracted simultaneously with the contractions of the vas deferens, so that the thin milky fluid of the prostate gland increases the volume of semen, the low alkaline property of the prostate fluid may be absolutely important for the egg’s fertility. Because the fluid of the vas deferens is relatively acidic due to the presence of nitric acid, and as a result, it helps inhibit sperm fertility, on the other hand, the secretions of the female vagina are acidic (its pH is equivalent to 3.5 to 4, as long as the pH of the fluids around the sperm is about Do not go higher than 6 to 5.6, the sperm will not be able to move).
Prostate fluid, which is slightly alkaline after ejaculation, may help to neutralize the acidity of these fluids and therefore sperm motility and fertility will be strengthened.
.
7- Ejaculatory duct: It is a small duct that during ejaculation causes the transfer of semen into the internal urethra. (Seminal fluid is a combination of fluid and sperm flowing from the seminal canal, about 10%, seminal vesicle fluid, about 60%, prostate gland fluid, about 30%, and a small amount of mucous gland secretions, especially the bulbourethral gland.
.
8- Urethra: For men, on the one hand, it leads to the excretion of kidney waste (urine) and on the other hand, during ejaculation, it blocks the bladder so that the urine is excreted and the semen can be easily discharged.
.
9- Penis: The external part of the genital system is small and loose in its normal state, and the urethra passes through it. The penis consists of three cylindrical tubes (two corpus cavernosum tubes and one spongy tube) that can be expanded and has erectile tissues, and its end is slightly larger and is known as the glans penis. These tubes are filled with blood when stimulated and cause stiffness and lengthening of the penis, which is called erection. This stiffness causes pressure on the veins of the penis so that more blood remains in the penis and thereby increases the duration of erection.
.
10- Sperm: In general, sperm is produced in the testicles and stored in the epididymis, and then through the vas deferens, which expands before entering the prostate, known as the ampoule of the vas deferens, together with the contents of the seminal vesicles, flows into the ejaculatory duct and passes through the prostate. It empties in the internal urethral duct, and the prostatic ducts take the contents of the prostate gland to the ejaculatory duct and from there to the internal urethra, and finally to the urethra, which is the last channel connecting the testicle to the outside.
.
Inside the urethra, a large number of tiny glands called urethral are formed, which pour mucoid secretions into the urethra. On the other hand, more secretions are secreted from the bulbourethral gland, which is also known as Cowper’s gland, near the origin of the urethra. Cooper’s gland: It is the size of a pea and is located under the prostate, and its alkaline secretions are poured into the urethra during sexual stimulation before reaching orgasm. It will be during ejaculation.
