Specific features of the morphology of the spinal nodes of homeothermal vertebrate animals in the comparative and anatomical series

• Published in: Ukrainian Journal of Veterinary and Agricultural Sciences
• Main Authors: L. P. Horalskyi, I. M. Sokulskyi, N. L. Kolesnik, N. L. Radzіkhovsky, О. F. Dunaievska, B. V. Gutyj, O. V. Pavliuchenko, I. Y. Horalska
• Format: Article in Journal/Newspaper
• Language: English
• Published: Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv 2023
• Subjects: evolutionary anatomy; micromorphology; organs of the nervous system; morphological studies; basophilic substance; nuclear-cytoplasmic relationship; Agriculture; S; Canis lupus
• Online Access: https://doi.org/10.32718/ujvas6-1.04; https://doaj.org/article/84a2f4d3c35e46e7992591db383500a2

Scientific studies that reflect the evolutionary morphology of the nervous system, namely the spinal nodes of homoeothermic vertebrates, allow us to identify specific patterns, trends, and criteria that relate to the structural organization of the organ at the population and cellular levels of their organization. The evolutionary direction of research into the macro- and microstructure of spinal cord nodes provides an opportunity to investigate the patterns of formation of optimal relationships of their structural components: nerve and glial cells, capillaries concerning the level of development of the organism, and their motor activity. The article contains the results of the morphometric characteristics of the spinal nodes of warm-blooded vertebrates in a comparative aspect: class Aves – Birds (Gallus gallus, forma domestica L., 1758 – domestic chicken); class Mammalia – Mammals (Oryctolagus cuniculus L., 1758 – European krill, Canis lupus familiaris L., 1758 – domestic dog, Sus scrofa, forma domestica L., 1758 – domestic pig, Bos taurus taurus L., 1758 – domestic bull). When performing this work, complex research methods were used: anatomical, neurohistological, morphometric, and statistical. The morphological study of the structural components of the organs of the nervous system was studied on histological sections by the method of light microscopy following the requirements of the international principles of the “European Convention for the Protection of Vertebrate Animals Used in Experiments and for Other Scientific Purposes” (Strasbourg, 1986), a decision of the First National Congress on Bioethics (Kyiv, 2001), Law of Ukraine No. 692 “On the Protection of Animals from Cruel Treatment” (3447-IV) dated February 21, 2006. For histological examination, the newly selected material was immediately fixed in a 10% aqueous neutral formalin solution, with a fixation period of 30 days, followed by step-by-step embedding in paraffin. Using a sled microtome, histological sections with a thickness of 6–10 μm were ...