BACKGROUND Although significant efforts have been put into restituting the European bison (Bison bonasus) and increasing its population, it remains a globally endangered species and requires conservation. Protection programs of bison indicate the need for morphological studies of their individual systems, in order to enhance restitution programs and enable appropriate veterinary care. The aim of this study was to investigate the morphology of the coronary veins of the European bison (Bison bonasus). RESULTS The study was carried out on 78 hearts of European bison of both sexes, aged 5 to 21 years. The subepicardial veins were clearly visible after being filled with dyed synthetic latex (LBS 3060), Plastogen G and Batson's No. 17. In all the studied animals, the great cardiac vein drains into the coronary sinus. The interventricular paraconal branch and the circumflex branch of the great cardiac vein were distinguished. The left marginal vein, which originated in the apical area or halfway along the length of the left ventricular margin, was easily identified in 65 animals (83%). In most animals (51 bison, 65%), the middle cardiac vein drained into the coronary sinus, while in some animals it drained into the right atrium (27 animals, 35%). CONCLUSIONS Blood from the cardiac walls is drained into the great cardiac vein, the middle cardiac vein, the right coronary veins and numerous small cardiac veins.

中文翻译：

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欧洲野牛（Bison bonasus）冠状静脉的大体解剖。

背景技术尽管已经为恢复欧洲野牛（Bison bonasus）和增加其种群数量做出了巨大努力，但它仍然是全球濒危物种，需要保护。野牛的保护计划表明，需要对各自的系统进行形态学研究，以加强赔偿程序并提供适当的兽医护理。这项研究的目的是调查欧洲野牛（Bison bonasus）的冠状静脉的形态。结果本研究是在78例年龄在5至21岁的欧洲野牛上进行的。充满染色的合成乳胶（LBS 3060），Plastogen G和Batson的No.17后，心外膜下静脉清晰可见。在所有研究的动物中，巨大的心脏静脉都排入冠状窦。区分出心脏大静脉的室间圆锥旁支和回旋支。在65只动物（占83％）中很容易识别出起源于根尖区域或沿左心室边缘长度的一半的左边缘静脉。在大多数动物中（51野牛，65％），心脏中部静脉排入冠状窦，而在某些动物中，中部静脉排入右心房（27只动物，占35％）。结论来自心脏壁的血液被排入大心脏静脉，中心脏静脉，右冠状静脉和许多小心脏静脉。在大多数动物中（51野牛，占65％），心脏中部静脉排入冠状窦，而在某些动物中，其心脏排入右心房（27只动物，占35％）。结论来自心脏壁的血液被排入大心脏静脉，中心脏静脉，右冠状静脉和许多小心脏静脉。在大多数动物中（51野牛，65％），心脏中部静脉排入冠状窦，而在某些动物中，中部静脉排入右心房（27只动物，占35％）。结论来自心脏壁的血液被排入大心脏静脉，中心脏静脉，右冠状静脉和许多小心脏静脉。