The structure of the bladder: especially in women
In our body there is a hollow organ, the bladder. Bladder function is important. One of them is the accumulation of urine. Subsequently, it is emptied through the urethra and sphincter. Let’s look at the structure of the bladder and figure out how to work the sphincter.
Appearance, i.e. the size may vary. This happens due to the strong fullness urine. Its location in the pelvic area. Features body consist in the fact that it is branch of final part of the ducts that result in the ejaculation and seminal vesicles in men. In women it is the uterus and the vagina. In the completed state of his round. Size, that is, the amount a person after twenty years, up to five hundred milliliters. This determines its elasticity. This tank empties through the sphincter.
Anatomy defines the anterior part (the value of this is that she turned to the front of the abdominal wall). Also is the tip of the bladder. From her navel stretches fibrous strand is the urinary canal of the fetus. The top descends smoothly into the body, and then in the bottom of the bladder, which is funnel-shaped (called the bladder neck) and passing in the ureter, and between them is the sphincter. Sphincter – a valve device. The role of it is that the opening is emptying.
Human organs have their own characteristics. This is a very complex system.
Human anatomy suggests that in the male body from the top of the reservoir for urine is collected of a loop of intestine. But the women in this area is the front wall of the uterus, but not other organs. Its size changes after filling. Then he, along with the peritoneum rises pubis. Men verhnesadovoe part develops into the rectum, and in women, surface of the uterus. Boca relate to muscles the end of the rectum in men and in women.
Mocevic the person is covered from all sides by peritoneum. Features: men’s floor it turns into the rectum, and in women in the uterus. In the pelvis, is attached by fibrous strands. In addition, the so-called reservoir of urine attached to the navel umbilical ligament and muscle bundles. That is their role. They form a recto-vesical (male), and pubic-vesical muscle. Everyone, regardless of gender, this body is fixed by means of the beginning of the urethra and end of the ureter. Then comes the separation from the stronger sex, is prostate gland, and in females the urogenital diaphragm.
From bladder has a mucosa, muscularis, submucosa, and in those areas where the peritoneum is a serous membrane and sphincter. When it’s full, it changes its size and the walls are thin. After the devastation, the structure becomes thicker. Is its value and role in the body.
Inside urinary human organ lined with mucous membrane, which are formed from folds in the devastation. When filled increases the size and folds out. The epithelium that covers the mucosa, after emptying round. And when the filling becomes flat and thin. Inside the walls are pink. Its walls are moving, form folds. At the bottom there is an area in the shape of a triangle, fused with the muscle membrane. In front of it is a sphincter and the beginning of the ureter. His holes are in other corners of the triangle, and all around this region – magnocaricetea fold.
Mucosa this tank as in women, and men, can be folded (size different), through the submucosa. And at the bottom it is not. The wall is solid muscle, that is, the muscular coat of the bladder. Features it is a structure of three layers ― outer, middle and inner. Two of them are inner and outer, is longitudinally directed. But the middle is circular. He is the most developed. From it is the sphincter, the so-called «constrictor».
Nerves and blood vessels
Anatomy of body can tell more about him. For example, the blood up to the body flows through the arteries of the navel (left and right). The sides and bottom are provided with blood by means of the lower vesical arteries.
On the walls on the blood flowing through my veins and down into his venous plexus.
If we draw a contrast x-ray in the anteroposterior projection, the picture will be clear visible circle. Men and women it is the same. If you use the side, instead of the circle will be visible triangle.
The examination of uinskogo on newborns it will have a spindle shape. In preschoolers it has the shape of a pear. In children of primary school age like an egg. And only in adolescence, this tank completes its formation and takes the form as an adult.
The bottom of the bladder tank of the newborn have not finished the formation, therefore, at this stage of development is the back wall. Muscle body not yet developed, but the mucosa is formed.
Structure on newborns: the top does not reach the navel, so girls he can’t even touch the vagina and in boys rectum. Its front end is the outer layer of the peritoneum. That is, it acts beyond it, before she closes it back. To age three the bottom is at the top of the pubic symphysis. In adolescents the bottom of the falls to the middle. In his youth the bottom is equal with the pubic symphysis, that is, with its lower edge. The Mature person the bottom is lowered, the distance depends on the condition of the urogenital muscle.
The functioning of the bladder always depends on how was its development and formation.