Pancreatic ducts in almost all people have the same structure, although some do not know where they fall and open. It turns out that in a healthy person the secretion secretion system consists of two excretory ducts: the main duct and the additional one that flows into it, which flow into the duodenum. In addition, many small derivation systems are also included here.
The main outlet channel is sometimes called Virsungov in honor of the German scientist, who first discovered it. It begins with the tail of the pancreas and rushes through it to the duodenum. At the end, he has a sphincter that opens and regulates the flow of juice. If, beginning in the tail, the Virsung canal has a diameter of only about 2 mm, then passing through the body, it becomes a little wider - 2-3 mm, and at the outlet in the head it already has a diameter of about 4 mm. The shape of the Virsungova canal resembles an arc and almost repeats the shape of the pancreas.
Over the entire length, additional discharge ducts smaller in size or caliber flow into it. Their number is absolutely different in people. That is why the distance between them is also not the same. The trunk type of the system is assumed to have 20-35 smaller tubules, and in the case of loose ones, there are about 60 of them. In the first case, they are about 1.5 cm from each other, and in the second it decreases significantly.
In the head of the pancreas, the additional duct enters the main duct. This fusion occurs 2.5 or 3 cm before the main sphincter. However, some individuals have a slightly different structure, and the extra discharges into the duodenum itself. This is not a deviation. This structure of excretory ducts is approximately in the third half of humanity.
Anomalies in the development of the
excretory system Now, knowing where the pancreatic ducts enter and open, it is possible to consider anomalies in organ development. The most common ailment associated with the pancreas is the plugging of the Virsungova canal. This leads to the development of pancreatitis. Equally common is the obstruction of small tubules. In medicine, this phenomenon is called the "chain of lakes", which leads to the expansion of the ducts.
Occasionally occur in the structure of the ducts and significant deviations. There are cases when the main canal branches at a certain length of passage through the pancreas. Thus, two main branches are obtained. It is fraught with congenital stenosis.
Pancreatic duct widening
Normally, the pancreatic duct can reach a maximum internal diameter of 2 mm. It is well visualized during transverse scanning of the middle third of the organ. The walls of the organ are smooth, and the lumen is without stones. Expansion of the duct can be observed with the following deviations:
- the presence of a tumor that is located on the head;
- interruption by small or medium stones;
- overlapping of the intrapancreatic duct;
- manifestation of chronic pancreatitis;
- consequences of Whipple's operation, as well as partial pancreatectomy.
Pancreatic canal channel
Some experts call the canal of the spleen of the pancreas "the gray cardinal of the body".Its functional duties are not only based on the metabolism, but also on interaction with the "system cleaning" organs, which are the liver and kidneys.
In the female body, it can affect the functioning of the uterus, its functions, and the ability to bear a child. In the male body, it has a significant effect on sperm production, in particular on quantity and quality. By influencing some biologically active points that are located on this channel, it is possible to correct the processes in the body of a woman, preventing unwanted pregnancies.
The spleen canal also has a physiological effect, which manifests itself in:
- the process of splitting the food masses;
- regulation of water exchange;
- implementation of the hematopoiesis process.
Norm of the size of the Pyrrus duct of the piriform duct
The shape of the Virpsong duct depends on the individual features of the structure of the body. But most often there is an arcuate, although it can be knee-shaped, S-shaped, smoothly repeating the bends of the pancreas. According to the studies, its main bend is near the head, and the other part, which passes through the body of the organ, is almost completely rectilinear.
In the main channel, as in the main river, smaller channels flow into it, because of which it gradually expands and increases in size. In this case, the norm of the Virpsong duct size is:
- at the tail 1.0-1.7 mm;
- in the body of the gland is about 2.4-2.6 mm;
- in the head is not more than 3.3 mm.
Additional aberrant pancreatic duct
The aberrant pancreatic duct is an anomaly associated with impaired rotation and migration, there is an order in 5% of people.
Usually, its beginning is located on the head of the organ, and ends with the sphincter Helly, which passes the juice into the duodenum. When plugging an additional duct, a relapse of acute pancreatitis occurs.