Erdoğan Serkan, Lima Martin, Pérez William
Department of Anatomy, Faculty of Veterinary Medicine, Dicle University, 21280, Diyarbakir, Turkey,
Anat Sci Int. 2014 Jan;89(1):46-52. doi: 10.1007/s12565-013-0199-5. Epub 2013 Aug 25.
In this study, we describe the internal structures of both ventricles and the valvular apparatus of the heart of the white rhino. In the right of the heart, three papillary muscles were found in septal and marginal walls and m. papillaris magnus was the biggest. There was only one m. papillaris parvus in the right ventricle. The right atrioventricular valve was tricuspid, and the parietal cusp was longest. In the left of the heart, two papillary muscles were found on the septal wall and the subauricular was the biggest. The left atrioventricular valve was bicuspid and the parietal cusp was longest. There were no nodules in the valves of the pulmonary trunk and aorta, and the semilunar valves had many fibrous folds and transparent parts. Within the cardiac skeleton there was a cartilago cordis which occupied a small part of the right fibrous trigone. While the right ventricle included only one septomarginal trabecula, there were many trabeculae in the left ventricle. In both ventricles, the endocardium was thin and the subendocardial network was visible, also their continuation with the septomarginal trabeculae. We also found many trabeculae carneae in the dorsal part of the ventricles.
在本研究中，我们描述了白犀牛心脏的两个心室以及瓣膜装置的内部结构。在心脏右侧，在间隔壁和边缘壁中发现了三块乳头肌，其中大乳头肌最大。右心室中只有一块小乳头肌。右房室瓣为三尖瓣，壁侧瓣叶最长。在心脏左侧，在间隔壁上发现了两块乳头肌，其中耳下心室乳头肌最大。左房室瓣为二尖瓣，壁侧瓣叶最长。肺动脉干和主动脉瓣膜中没有结节，半月瓣有许多纤维褶皱和透明部分。在心脏骨骼内有一块心软骨，它占据了右纤维三角的一小部分。右心室仅包含一条隔缘小梁，而左心室中有许多小梁。在两个心室中，心内膜都很薄，心内膜下网络可见，并且它们与隔缘小梁相连。我们还在心室背侧发现了许多肉柱。
