Eggs, Chain, Finns, larvae and tapeworm cysts in feces, as they look on the photo?
The detachment of Chain( Cyclophyllidea) belongs to the class of tapeworms, about 3 thousand species are known.Chains are parasites of warm-blooded animals, several species parasitize in the human body.Representatives: echinococcus, pig, bovine, dwarf tsepene, and others. Each of them produces eggs.They are a form of infection, leading to the development of the disease.
Stages of development of the worm consistently succeed each other.It looks as follows: egg-larva( oncosphere-finna) - adult individual - segments with eggs.There are kinds of tapeworms( for example, wide ribbons), in which there are 2 intermediate hosts, in the body of which there are certain stages of development of the worm.
Infection begins when the solitic egg hits the human or animal body.This can happen when eating animals with grass, infected with hawks eggs, located in human feces.A person risks entering parasites into his mouth, using raw water from open reservoirs, unwashed fruits and vegetables, dirty hands, etc.
Inside the egg there is oncosphere - this is the larva in the initial stage.It has the shape of a ball and is equipped with six hooks, necessary for it to be fixed on the walls of the intestine of the host.Having made a hole in the wall of the intestine, the larva appears in the circulatory system, where along with the flow of blood migrates through the host's organism, enters the muscles of the animal( pig and bovine tapeworm).Or it is fixed on the villi of the human intestine, gradually destroying it by damage, and continues its development( dwarf tseleen).
Finns of chain
Then oncosphere is converted into finn( cysticerci).Finn looks like a bubble filled with liquid, with a screwed inward worm head, can have suction cups or hooks.When examining the slice of the meat of a sick animal( see photo), you can see numerous white impregnations - these are Finns of a flat worm.In the musculature of the animal( intermediate host), the larva at this stage can live up to 8-9 months, thanks to the formed cyst of the chain that protects it before the onset of a favorable period.If during this time there was no migration of the worm in the stage of Finn to the organism of the final host by eating them infected meat, then the parasite perishes.
When a meat infected by Finns infects a sick animal in the human body, the parasite, after being in the intestines of its final host, continues to live.Finn turns into an adult tapeworm: the head of the larva is turned and attached to the inner surface of the intestine.The body of the worm begins to increase in length due to the rapid growth of the segments from the cervix.
In adulthood, tapeworm can live for many years, assimilating amino acids and other useful substances, causing huge harm to the human body by its vital activity, releasing toxic products of metabolism.In the intestines of the host, the tapeworm reaches a mature state and is ready to produce its own eggs.The body of an adult worm consists of many segments in which the reproductive process takes place( see photo).The segments at the end of the body are filled with ready-made eggs.From time to time the segments come off, and along with the feces are removed from the host organism, infecting the environment with eggs of the chainworm.
Diseases caused by the eggs of the
The ingestion of eggs or larvae of the chain can lead to serious illnesses.The use of undercooked or undercooked meat, from the bovine tinnitus infected by Finns, can cause tenianhinas.
Cysticercosis is a disease caused by eggs of a pork chopstick caught by a fecal-oral route into the patient's body.At the infected person signs of a lesion of an intestinal tract and nervous system are observed.Finns( cysticerci) spread throughout the body, not continuing to become an adult.More often they are found in the eyes, the brain, under the skin.This leads to the defeat of the relevant organs.
In the fight against infection with eggs and tapeworm finnish, the following measures will help:
- control and culling of Finnish carcasses;
- compliance with hygiene rules;
- correct heat treatment( helminth eggs break down when heated over 37 degrees or freezing for several days, Finns die with long-term heat treatment over 80 degrees).
- regular medical examination and delivery of tests.The presence of eggs of parasites in the body can be determined by the doctor on the basis of the results of the analysis of feces, scrapes from the perianal zone, the detection of antibodies in the blood to parasite antigens.