Animal anatomy, histology, pathological anatomy

occurs in the cortex and nucleus accumbens of the kidneys.

Under the capsule is also fine-grained red

we can also see colored dots.

Fascioliasis-Objectives of the topic: To teach students the macroscopic and microscopic manifestations of fascioliasis using the example of the liver. Visual equipment and instruments: Organ, microtome, block window box, hematoxilin, eosin. Alcohol, xylene, paraffin, microscopy, histological preparation and museum preparations Purpose of the lesson: Study of microscopic and macroscopic appearance.1. Working pieces of pathological material will be cut from the kidneys and skeletal muscles. 2. The particles are washed and dehydrated in an alcohol battery. 3. Paraffin blocks are made. 4. Paint normal cuts. 5. Sections are stained with hematoxylin and eosin dyes.6. Macroscopic changes are studied using museum preparations.
Lesson content. Helminthiasis is a disease of farm animals caused by two parasites from the class of trematodes: faciola hepatica and faciola gigantic, which live in the liver, bile ducts and gall bladder. The disease is acute and chronic, characterized by inflammation of the gallbladder and bile ducts.pathways, general intoxication of the animal, metabolic disorders. Fasciliosis mainly affects sheep, goats and cattle. The disease is rare in horses, pigs, camels, reindeer, rabbits and rodents. People with fasciitis may also get sick. As a result of the dissolution of the adolescent cyst, young fascioli appear in the stomach of animals, which penetrate the intestinal wall and pass into the lymphatic vessels. Most parasites enter the liver through the bloodstream. They then migrate from the vessel walls into the liver parenchyma and bile ducts. Here they grow into puberty. In addition, fascioli can penetrate the wall of the gastrointestinal tract and pass through the serosa of the abdominal cavity into the liver. Focal parenchymatosis in the liver leads to the formation of mechanical hepatitis as a result of the fact that fasciola leaves the veins, enters the liver parenchyma and migrates to the bile ducts. The growth of granulation tissue at the site of ruptured parenchyma and its transformation into dense fibrous tissue leads to the development of a specific serotic process in the liver. In this case, several fibrotic foci combine to form large fibrotic areas. It then spreads through the bile ducts and grows in connective tissue. Macroscopic view. The body that died from fasciitis was thin, the mucous membranes were pale, and large amounts of fluid had accumulated in the abdominal cavity and heart sac. Lymph nodes enlarge. Specific changes occur in the liver. In chronic conditions, the liver becomes enlarged and dense. The surface is rough, with thick fibrous ridges under the capsule and in the parenchyma that appear like a network. The bile ducts are dilated, yellowish-white in color, the walls are thickened, and their density resembles mountain tissue. When cut, a semi-liquid green-brown mass and parasites appear. Sometimes the number of parasites reaches several hundred.