Histological patterns of the semilunar valve of the pulmonary trunk in an anglo-nubian goat

Abstract

The morphology of the valvular apparatus of the heart in animals is currently a topical and especially important area of the anatomy of the cardiovascular system. The study of the morphology of heart valves, namely their anatomy and histology, in animals in species and breed aspect, expands the area of knowledge of veterinary cardiologists and allows you to select an individual approach to a particular animal in the treatment of heart pathologies.
The purpose of our study is to study the features of the histological structure of the semilunar valve of the pulmonary trunk of the heart of the Anglo-Nubian goat breed, as well as to establish the morphometric parameters of the histostructures of this area.
The material for the study was the corpses of goats of the Anglo-Nubian breed at the age of 12 months, obtained by slaughter from the farm "Gzhelskoe Podvorye" in the Moscow region of the Russian Federation.
Selected samples for histological examination were stained with hematoxylin, eosin, Trichrome according to Masson, toluidine blue and Schiff-iodic acid according to McManus.
As a result of the study, it was found that the cusps of the semilunar valve of the pulmonary trunk of the heart of the Anglo-Nubian goat breed are represented by the aortic (fibrous), spongy (spongiform) and ventricular layers. The aortic layer is formed by collagen and elastic fibers, the spongy layer is formed by loose small-celled connective tissue, and the ventricular layer of the cusps of the semilunar aortic valve is also formed by connective tissue and is much smaller than the aortic one. According to the results of histological examination, morphometric data for each layer of the valve are presented.