Морфологическое строение сосудов легких

Аннотация

Purpose of the study: to study the morphological structure of the intrapulmonary arteries. Materials and methods. For the experiment. 60 white outbred laboratory rats, weighing 220-280 grams, males aged 4-5 months were used. The structure of the layers of the intrapulmonary arteries and their morphometry were studied. Conclusion: to compare the morphological structure of the intrapulmonary arteries, we studied them at 6 levels. Arteries of the 1st and 3rd level belong to the muscular-elastic type, arteries of the 4th-6th level - to the arteries of the muscular type. For a more thorough examination, the arteries were divided into three groups: arteries of small, medium and large caliber. The results of our research show that a spiral smooth muscle layer develops on grade 3 and 4 arteries. This layer appears in cross-section as a separate pillow-like bulge. It is located close to the outer elastic membrane on the side of the adventitia. Output. In conclusion, we can say that during the transition of the muscular-elastic arteries to the muscular arteries on the side of the adventitia, an additional muscle layer is formed, which surrounds the vessel wall in the form of a spiral. As a result, the size of the middle layer of the artery increases. This leads to a change in the Kernogh index.