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Descriptive Analysis of Cerebral Arterial Vascular Architecture in Dromedary Camel (Camelus dromedarius).
Frontiers in Neuroanatomy ( IF 2.1 ) Pub Date : 2019-07-25 , DOI: 10.3389/fnana.2019.00067
Ahmad Al Aiyan 1 , Preetha Menon 1 , Adnan AlDarwich 1 , Fatema Almuhairi 1 , Shaikha Alnuaimi 1 , Asma Bulshawareb 1 , Moneeb Qablan 1 , Safa Shehab 2
Affiliation  

The artiodactyl brain has multiple levels of vascular pooling and the rostral epidural rete mirabile (RERM) at its base. The current study is the first of its kind to precisely demonstrate the arterial vasculature of the dromedary brain, utilizing a new casting method with colored latex and epoxy paint. In total, 35 freshly slaughtered dromedary heads were injected with colored latex or colored epoxy paint prior to dissection in order to reveal cerebral vasculature; Ten processed heads were chemically digested with 5% potassium hydroxide to obtain hard casts of cerebral arteries and anastomosing structures. The outcomes of this study ascertain the distinct vascular features of dromedaries that set them apart from other artiodactyls. In addition to the RERM, the dromedary possesses a well-developed ophthalmic and chiasmatic rete. The dromedary is similar to giraffe, goat, cat and pig in the contribution of middle meningeal artery to the rete mirabile; however, dromedaries have several arteries emerging directly from the cerebral arterial circle that supply the choroid plexus and pineal gland. Additionally, dromedaries exhibit a dominant basilar system that dominates the blood supply to the medulla oblongata, pons, and cerebellum. In our study, we were able to graphically prove the lack of connection between the areas supplied by vertebrobasilar system and carotid system in the dromedary. Furthermore, the vertebral artery does not branch into the basilar artery; instead, it acts as a contributing vessel to the ventral spinal artery that later fuse to form the basilar artery. This study employed the new casting method to illustrate a new arterial source to RERM and the various anastomoses among arterial sources supplying the brain in the dromedary. These anastomoses play an important role in maintaining an uninterrupted cerebral blood supply, decreasing the vulnerability of the fragile brain against ischemia and stroke, as well as, play an important role in maintaining blood pressure and flow in long-necked dromedaries when they raise or lower their heads.

中文翻译:

独峰驼(Camelus dromedarius)中的脑动脉血管结构的描述性分析。

关节基动脑在其基部具有多个水平的血管汇集和硬膜硬膜外网状奇迹(RERM)。当前的研究是首次使用彩色乳胶和环氧涂料的新型浇铸方法来精确展示单峰骆驼的动脉血管系统。为了解剖脑血管,在解剖前总共给35个刚宰杀的单峰骆驼头注入了彩色乳胶或彩色环氧涂料。用5%的氢氧化钾化学消化10个加工过的头部,以获得硬的脑动脉铸模和吻合结构。这项研究的结果确定了单峰骆驼的独特血管特征,使它们与其他动手动物区分开来。除了RERM之外,单峰骆驼还拥有发达的眼科和消旋眼治疗仪。单峰骆驼与长颈鹿,山羊,猫和猪的相似之处在于脑膜中动脉对网状奇迹的贡献。然而,单峰骆驼有直接从脑动脉圆中出来的几条动脉,它们供应脉络丛和松果体。此外,单峰骆驼展现出主导的基底系统,该系统主导着延髓,脑桥和小脑的血液供应。在我们的研究中,我们能够以图形方式证明单峰骆驼的椎基底基底系统和颈动脉系统提供的区域之间没有连接。此外,椎动脉不分支到基底动脉;取而代之的是,它充当了腹侧脊髓动脉的血管,后来融合形成了基底动脉。这项研究采用了新的铸造方法来说明RERM的新动脉源以及在单峰骆驼中供应大脑的动脉源中的各种吻合。这些吻合在维持大脑不间断的血液供应,降低脆弱的脑部对缺血和中风的脆弱性方面起着重要作用,并且在长颈单峰骆驼的上升或下降时对维持血压和血流起着重要的作用。他们的头。
更新日期:2019-11-01
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