pronephric

简明释义

英[proʊˈnɛfrɪk]美[proʊˈnɛfrɪk]

前肾的

英英释义

单词用法

同义词

反义词

例句

1.Hagfish have a mesonephric kidney and are often neotenic of their pronephric kidney.

八目鳗类鱼有中肾，并且通常是其前肾的新生物。

2.Hagfish have a mesonephric kidney and are often neotenic of their pronephric kidney.

八目鳗类鱼有中肾，并且通常是其前肾的新生物。

3.During the early development, the pronephric 前肾 system plays a crucial role in excretion.

在早期发育过程中，前肾系统在排泄中起着至关重要的作用。

4.In some species, the pronephric 前肾 may regress and be replaced by more advanced kidney structures.

在某些物种中，前肾可能会退化，并被更高级的肾脏结构所取代。

5.The pronephric 前肾 kidney is the first stage of kidney development in vertebrates.

在脊椎动物中，前肾是肾脏发育的第一阶段。

6.The study focused on the development of the pronephric 前肾 stage in embryonic fish.

这项研究集中在胚胎鱼类的前肾阶段的发展上。

7.Researchers observed the pronephric 前肾 structures in amphibian larvae during their metamorphosis.

研究人员观察了两栖动物幼虫在其变态过程中出现的前肾结构。

作文

The study of embryonic development in vertebrates reveals a fascinating array of structures and functions that evolve over time. One such structure is the pronephric kidney, which represents the earliest form of kidney found in vertebrate embryos. This rudimentary organ plays a crucial role in the initial stages of development, serving as a temporary excretory system before more advanced kidney structures take over. Understanding the pronephric stage provides valuable insights into the evolutionary biology of kidney development and function.In the context of vertebrate embryology, the pronephric kidney is typically the first of three kidney types to appear, followed by the mesonephric and metanephric kidneys. The pronephric kidney is primarily functional in early embryonic life, where it facilitates the removal of waste products and maintains fluid balance. Despite its simplicity, this organ is remarkably efficient for the needs of the developing embryo.The formation of the pronephric kidney begins with the aggregation of mesodermal cells, which differentiate into nephron precursors. These precursors then develop into nephrons, the basic functional units of the kidney. In many species, the pronephric kidney consists of a series of tubules that connect to a common duct, allowing for the drainage of urine into the cloaca. This anatomical arrangement highlights the efficiency of the pronephric system in managing waste during a critical period of growth.Interestingly, the pronephric kidney does not persist throughout the life of the organism. As the embryo matures, it transitions to the mesonephric kidney, which offers enhanced functionality and becomes the primary excretory organ until the permanent metanephric kidney develops. This transition illustrates the dynamic nature of kidney evolution, demonstrating how organisms adapt their physiological systems to meet their developmental needs.Research on the pronephric kidney has implications beyond embryology; it also contributes to our understanding of congenital kidney disorders. By studying the genetic and molecular pathways involved in pronephric development, scientists can identify potential targets for therapeutic intervention in individuals with kidney malformations. This connection between basic research and clinical application underscores the importance of studying early organ development.Moreover, the pronephric kidney serves as an excellent model for regenerative medicine. Scientists are exploring ways to harness the regenerative capabilities observed during the pronephric stage to develop strategies for repairing or replacing damaged kidneys in adults. The unique properties of the pronephric kidney highlight its potential as a source of inspiration for innovative medical treatments.In conclusion, the pronephric kidney is a fundamental aspect of vertebrate embryonic development that not only sheds light on the evolutionary history of kidneys but also holds promise for future medical advancements. Its study enriches our understanding of biological processes and opens avenues for addressing kidney-related health issues. As research continues to unfold, the significance of the pronephric kidney will undoubtedly grow, emphasizing the intricate connections between development, evolution, and health.

在脊椎动物胚胎发育的研究中，揭示了一系列令人着迷的结构和功能，这些结构和功能随着时间的推移而演变。其中一个结构是原肾，它代表了脊椎动物胚胎中发现的最早形式的肾脏。这个初步的器官在发育的初始阶段发挥着至关重要的作用，作为临时排泄系统，在更高级的肾脏结构接管之前。理解原肾阶段为我们提供了关于肾脏发育和功能的进化生物学的宝贵见解。在脊椎动物胚胎学的背景下，原肾通常是出现的三种肾脏类型中的第一种，随后是中肾和后肾。原肾在早期胚胎生活中主要发挥功能，帮助清除废物并维持液体平衡。尽管其结构简单，但这个器官对于发育中的胚胎的需求来说却是相当高效的。原肾的形成始于中胚层细胞的聚集，这些细胞分化为肾单位前体。这些前体随后发展成肾单位，肾脏的基本功能单位。在许多物种中，原肾由一系列连接到共同导管的管道组成，允许尿液排入泄殖腔。这种解剖结构突显了原肾系统在管理关键生长阶段的废物方面的效率。有趣的是，原肾并不会在生物体的一生中持续存在。随着胚胎的成熟，它过渡到中肾，后者提供增强的功能，并成为主要的排泄器官，直到永久的后肾发展。这一过渡展示了肾脏进化的动态特性，表明生物体如何适应其发育需求。对原肾的研究不仅限于胚胎学；它还为我们理解先天性肾脏疾病提供了贡献。通过研究涉及原肾发育的遗传和分子通路，科学家可以识别潜在的治疗干预目标，以帮助那些有肾脏畸形的人。这种基础研究与临床应用之间的联系强调了研究早期器官发育的重要性。此外，原肾也作为再生医学的优秀模型。科学家们正在探索如何利用在原肾阶段观察到的再生能力，开发修复或替换成年损伤肾脏的策略。原肾的独特特性凸显了它作为创新医学治疗灵感来源的潜力。总之，原肾是脊椎动物胚胎发育的基本方面，不仅揭示了肾脏的进化历史，还为未来的医学进展提供了希望。对它的研究丰富了我们对生物过程的理解，并为解决与肾脏相关的健康问题开辟了途径。随着研究的不断深入，原肾的重要性无疑将会增加，强调了发育、进化与健康之间错综复杂的联系。