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首页> 外文期刊>Biology Open >Roles of Keber's valve and foot chamber for foot manipulation in the mussel Nodularia douglasiae
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Roles of Keber's valve and foot chamber for foot manipulation in the mussel Nodularia douglasiae

机译：Keber瓣膜和足腔在贻贝结节性结节中的脚操作中的作用

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In order to analyse the roles of Keber's valve for foot manipulation in the musselNodularia douglasiae, the anatomy and haemolymph flow in the cardiovascular system were detected by magnetic resonance imaging. The superficial layer of the foot was covered by a dense muscle layer, which extended to the dorsal side and connected with the shell. This closed space, the foot chamber, had an inlet (anterior aorta) and an outlet (Keber's valve). At rest, in the beginning of the systolic phase, flows in the anterior aorta and the pedal artery increased, followed by the pedal and visceral sinuses. Then these flows ceased at the end of the systolic phase, followed by inflow to the ventricle in the diastolic phase; therefore, the compliance of the foot chamber is low enough to transfer pressure pulses to the visceral sinus. Extension of the foot started with relaxation of the foot muscle, so the compliance of the foot chamber increased. Then, Keber's valve closed so that the haemolymph filled the foot haemocoel. Retraction of the foot is initiated by the opening of Keber's valve. Judging from these results Keber's valve and the foot chamber are essential for circulation at rest, foot extension and retraction.This article has an associated First Person interview with the first author of the paper.
机译：为了分析Keber瓣膜在水生贻贝结节中的脚操作作用，通过磁共振成像检测了心血管系统中的解剖结构和血淋巴流。脚的表层被致密的肌肉层覆盖，该肌肉层延伸到背侧并与外壳连接。脚腔这个封闭的空间有一个入口（前主动脉）和一个出口（Keber瓣膜）。休息时，在收缩期开始时，前主动脉中的血流和踏板动脉增加，然后是踏板和内脏窦。然后这些流量在收缩期结束时停止，随后在舒张期流入心室;因此，足室的顺应性足够低，足以将压力脉冲传递到内脏窦。脚的伸展始于脚部肌肉的放松，因此脚腔的顺应性增加了。然后，关闭Keber的瓣膜，使血淋巴充满足血。脚的缩回是通过打开Keber的阀门开始的。从这些结果来看，Keber的瓣膜和足底腔对于休息，足部伸展和缩回时的循环至关重要。本文对第一人进行了第一人称采访。

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