pronephros

简明释义

英[prəʊˈnefrɒs]美[proʊˈnefrɑːs]

n. [胚][脊椎] 前肾（脊椎动物最原始的泌尿器官）

英英释义

单词用法

同义词

反义词

例句

1.The goat embryo re-acted the process of the system evolution, which passed through pronephros, mesonephros and metanephros.

山羊胚胎重新反应了系统进化的过程，该过程通过前肾，中肾和后肾。

2.The development of the kidney, the major excretory organ after birth, consists of 3 stages:the pronephros, mesonephros and metanephros.

肾脏是人体主要的排泄器官，它的发育经过原肾、中肾、后肾3个阶段。

3.The development of the kidney, the major excretory organ after birth, consists of 3 stages:the pronephros, mesonephros and metanephros.

肾脏是人体主要的排泄器官，它的发育经过原肾、中肾、后肾3个阶段。

4.In fish, the pronephros 前肾 serves as the first functional kidney during larval stages.

在鱼类中，前肾 pronephros 在幼虫阶段作为第一个功能性肾脏。

5.In amphibians, the pronephros 前肾 is typically functional only in the larval stage.

在两栖动物中，前肾 pronephros 通常仅在幼虫阶段发挥功能。

6.The development of the pronephros 前肾 is crucial in the early stages of embryonic development.

在胚胎发育的早期阶段，前肾 pronephros 的发育至关重要。

7.During the transition from pronephros 前肾 to mesonephros, significant morphological changes occur.

在从前肾 pronephros 过渡到中肾时，发生显著的形态变化。

8.Research on the pronephros 前肾 can provide insights into kidney diseases in humans.

对前肾 pronephros 的研究可以为人类肾脏疾病提供见解。

作文

The study of embryonic development in vertebrates reveals fascinating insights into the evolutionary history of species. One of the key stages in this development is the formation of the kidney, which plays a crucial role in the excretion of waste and the regulation of bodily fluids. In particular, the first stage of kidney development is known as the pronephros, which is an essential structure in the early life of many vertebrates. The pronephros is considered the most primitive form of the kidney and is primarily found in embryos of fish and amphibians.During the early stages of development, the pronephros forms from the intermediate mesoderm, which is a layer of tissue that gives rise to various organ systems. This initial kidney structure is typically functional only for a short period before it degenerates and is replaced by more advanced kidney structures, such as the mesonephros and metanephros.The pronephros serves several important functions during its brief existence. It is responsible for filtering blood and producing urine, albeit in a limited capacity compared to later kidney forms. The presence of the pronephros in the embryo indicates the beginning of the organism’s ability to manage waste products and maintain homeostasis, which is vital for survival.In evolutionary terms, the pronephros provides insight into how renal structures have adapted over time. By studying the pronephros in various species, scientists can trace the lineage of kidney evolution and understand how different organisms have developed specialized adaptations to their environments. For instance, while fish retain the pronephros as a functional kidney throughout their life cycle, amphibians transition to more complex kidney forms as they mature and adapt to terrestrial living.Research on the pronephros has broader implications beyond developmental biology. It also intersects with fields such as genetics and medicine. Understanding the genetic pathways involved in the formation of the pronephros can shed light on congenital kidney disorders in humans. Furthermore, studying the regenerative capabilities of the pronephros in certain species may offer potential avenues for regenerative medicine, particularly in kidney repair and transplantation.In conclusion, the pronephros is a remarkable structure that exemplifies the intricate processes of embryonic development and evolutionary biology. Its role as the first kidney form highlights the importance of understanding our biological roots and the mechanisms that govern organ development. As research continues to unveil the complexities of the pronephros, we gain valuable knowledge that can inform both scientific inquiry and medical advancements, ultimately enhancing our understanding of life itself.

在脊椎动物的胚胎发育研究中，揭示了物种进化历史的迷人见解。肾脏的形成是这一发展的关键阶段之一，它在废物排泄和体液调节中发挥着至关重要的作用。特别是，肾脏发育的第一阶段被称为pronephros，这是许多脊椎动物早期生命中的一个重要结构。pronephros被认为是最原始的肾脏形式，主要存在于鱼类和两栖动物的胚胎中。在发育的早期阶段，pronephros由中间中胚层形成，这是一种组织层，产生各种器官系统。这个初始的肾脏结构通常只在短时间内发挥功能，然后退化并被更高级的肾脏结构（如中肾和后肾）取代。在其短暂存在期间，pronephros承担了几个重要功能。它负责过滤血液和产生尿液，尽管与后来的肾脏形式相比，其能力有限。胚胎中存在pronephros表明有机体开始具备处理废物和维持体内平衡的能力，这对于生存至关重要。从进化的角度来看，pronephros提供了关于肾脏结构如何随时间适应的见解。通过研究不同物种中的pronephros，科学家可以追踪肾脏进化的谱系，并理解不同生物如何发展出适应其环境的特殊适应性。例如，虽然鱼类在整个生命周期中保留pronephros作为功能性肾脏，但两栖动物在成熟并适应陆地生活时会过渡到更复杂的肾脏形式。对pronephros的研究不仅在发育生物学方面具有广泛的意义。它还与遗传学和医学等领域交叉。理解参与pronephros形成的遗传途径可以揭示人类先天性肾脏疾病。此外，研究某些物种中pronephros的再生能力可能为再生医学提供潜在途径，特别是在肾脏修复和移植方面。总之，pronephros是一个非凡的结构，体现了胚胎发育和进化生物学的复杂过程。它作为第一种肾脏形式的角色突显了理解我们生物根源和支配器官发育机制的重要性。随着研究继续揭示pronephros的复杂性，我们获得了宝贵的知识，可以为科学探究和医学进步提供信息，最终增强我们对生命本身的理解。