Doklady Biological Sciences Pub Date : 2024-07-01 , DOI: 10.1134/s0012496624701023 P A Kuznetsov 1 , A V Ereskovsky 1, 2 , E N Temereva 1
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Abstract
The fine structure of echiurid blood vessels in the proboscis is known in detail, but the circulatory system of the trunk is still understood mainly at the level of general anatomy. The trunk circulatory system was studied in Bonellia viridis females, and specialized podocytes were found to form the walls of the ring vessel and the anterior part of the ventral vessel. Podocytes were for the first time described in the echiurid circulatory system. Podocytes of B. viridis displayed a typical cell architecture, which is known for other bilaterians. A podocyte consists of a cell body; primary processes; and pedicels, which extend from the primary processes and are interconnected via specialized slit diaphragms. The presence of podocytes indicates that the ventral and ring vessels act as ultrafiltration sites, where the plasma is filtered through the basal lamina into the body cavity.
中文翻译：
首次在神秘的 Echiurids（环节动物：Thalassematidae）循环系统中检测到足细胞
抽象的
长鼻中的针状血管的精细结构已被详细了解，但躯干的循环系统仍然主要在一般解剖学水平上被了解。研究了雌性博内利亚（Bonellia viridis ）的躯干循环系统，发现专门的足细胞形成环血管壁和腹侧血管的前部。足细胞首次在马蹄莲循环系统中被描述。 B. viridis的足细胞表现出典型的细胞结构，这在其他两侧对称动物中也是众所周知的。足细胞由细胞体组成；主要流程；和花梗，从初级突起延伸出来，并通过专门的狭缝隔膜相互连接。足细胞的存在表明腹侧血管和环形血管充当超滤位点，其中血浆通过基底层过滤到体腔中。
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