Characteristics of the shell of the egg, its anatomical features and functions
The testis is a paired oval bodies located in scrotum. Shell eggs are essential for the life of this body. Because it produces sperm and the hormones necessary for the normal functioning of the male body.
Testicle placed in the scrotum: the left is usually lower than the right. This body has an oval shape. Its weight is from 15 to 25 grams. Anatomy of the testes before puberty is somewhat different: their size is much smaller, and consistency – a few is too flabby.
The structure of this body is quite complex, due to the peculiarities of its functions. So, in the testicle varies the upper end, middle part, the rear edge and the lower end, or tail. To the rear surface adjacent the appendage of the epididymis.
The egg is adherent to the tunica albuginea. This shell is surrounded by the visceral and the parietal sheet. They form along the vaginal sheath, which is associated with muscle bundles. The structure of the beams is such that they very effectively support the body in the scrotum, protecting it from shocks. In addition, this muscle may elevate the testis, which is very important for movement of sperm during ejaculation.
Tunica sheath is located on the back edge of testicles. Her anatomy is quite peculiar. This thickening, which depart from the partitions formed by connective tissue, called the maxillary body. Partitions divide the fabric on several hundred slices.
Anatomy of a lobule rather complex: it is formed from the seminiferous tubules, having the winding structure. Near gaymorovu body these tubules spamlaws, then enter it. In the body of the maxillary tubules unite into larger ones, and then ‒ in one duct. It is located in the appendage.
The body of the epididymis and then moves into the VAS deferens, which, in fact, transportorul semen. Thus, the tunica sheath is essential for the activity of the gland, as it created conditions for the maturation of sperm.
The anatomy of these structural elements of the testis rather peculiar. The structure includes semibratowo epithelium and bertoletova cells. In the anatomy of these tubules should also mention Ladyhawke cells, which play a crucial role in the formation of male hormones.
Interestingly, the length of these tubules up to 400 meters. It is in this subtle laboratory and the maturation of sperm.
How sperm are formed
Sperm are formed and accumulate in the egg. This is the result of meiosis – a special type of cell division. That is why each sperm has a unique setgene, the main genetic "building blocks". All shell eggs constructed so that the spermatozoa were deposited in the most secure and appropriate environment.
Spermatogenesis (formation of sperm) must occur at some lower temperature. In fact, human anatomy has provided, this is cool, because the testicles are in the scrotum. The structure of the scrotum such that in extreme cold the muscles that support the testicles, raise it, and it's like "hiding". But in hot weather it is lowered to the maximum depth.
Testes and protected from other dangers. Only alcohol nature they are not saved: the structure of the tubules where sperm are formed, are very vulnerable to this poison. In General, the process of formation of spermatozoa is very difficult and sheath testicles do a great job to ensure that genetic information was unique.
The formation of hormones
The most important hormone for men – testosterone – formed egg in the shell, where located special cell – glandulosity. The total mass of these cells is about one-fifth of the entire mass of the body.
Injuries of the testicle, and in violation of the functioning of the reproductive system can be formed insufficient amounts of testosterone. While there is underdevelopment of the primary and secondary sexual characteristics, violated the proportions of the skeleton (e.g. limbs are lengthened by increasing the deposition of fat on the belly).
Which means underdevelopment of an organ
In some cases, the doctor can diagnose the change of the anatomy of these organs in congenital or acquired hypoplasia. In this case, patients have signs of evnuhoidizm. There are following variations in the anatomy of the testes:
- Violations of the structure of seminiferous tubules, their underdevelopment. As a result, the sperm is not fully formed and are often defective.
- Dysgenesis of the testes. The testicles are small in size.
Sometimes, the underdevelopment of the testicles can be combined with hypoplasia of the penis. It happens with some congenital anomalies of sexual differentiation.
Testes in children
Anatomy of a children's egg differs from the adult. Newborn boy's testicles are the size of tiny. But in the first year are actively developing all of its shell, and thus the egg increases in size twice. But then it "sleeps" until the start of puberty.
At the same time, children have not developed all shell eggs. So, they have not developed Ladyhawke cells, which are involved in production of sex hormones. And only about ten years all these bodies again begin to flourish, and the verythe egg dramatically increases in size. For the entire period of sexual development the eggs increase in size nine.
In addition, approximately nine years the boy begins to develop spermatogenic shell. Of course, the features of children's anatomy such that at this time, the testicles are still unable to form sperm. Mature sperm begin to form only about fifteen or sixteen. And this process does not stop until the death of the man. At the same time dramatically increases the production of testosterone.
The testicles of boys are very sensitive to injury, changes of the background temperature and other adverse factors. Particularly bad for the health of these delicate organs feature anatomy of a boy when the testicles do not descend into the scrotum but remain in the inguinal canal or in the abdominal cavity. In this case, the situation can be corrected only operation.
The delicate structure of the testicles, their vulnerability mean to take care of this body because it is involved in maintaining masculine characteristics and the process of procreation. Their treatment is very long and requires great patience.
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