planarian

简明释义

英[pləˈneərɪən]美[pləˈnæriən]

n. 真涡虫；三肠涡虫

英英释义

单词用法

同义词

反义词

例句

1.In the usual manner, the planarian stem cells migrated to the site of the wound, sensed what was missing and began rebuilding.

如同往常一样，涡虫的干细胞移行至创伤处，感知失掉的东西并开始重建。

2.These structural differences reflect that the planarian (Dugesia japonica) lies in the position of a much higher grade in course of the systematic evolution of Turbellaria.

这些结构差异反映出日本三角涡虫在涡虫纲系统演化中处于较高级的地位。

3.Once you've identified the planarian people in your life, choosing to bear a very light grudge toward them can spare you immense frustration.

一旦你找出了生活中的真涡虫型人，那么选择去对他们有一点点怨恨这样可以为你免去巨大沮丧。

4.A planarian is a flatworm, one of the lowest life-forms that can be considered an animal.

真涡虫是一种扁虫，一种可以被认为是动物的最低级生命形式。

5.These structural differences reflect that the planarian (Dugesia japonica) lies in the position of a much higher grade in course of the systematic evolution of Turbellaria.

这些结构差异反映出日本三角涡虫在涡虫纲系统演化中处于较高级的地位。

6.Chop one into pieces, and each piece can grow into a complete planarian.

把涡虫切成多块，结果每块都能长成一个完整的涡虫。

7.In biology class, we observed a live planarian 涡虫 under the microscope.

在生物课上，我们在显微镜下观察了一只活的涡虫。

8.The study of the regenerative abilities of the planarian 涡虫 has fascinated scientists for decades.

对涡虫再生能力的研究吸引了科学家几十年的关注。

9.Researchers are exploring how planarians 涡虫 can regenerate lost body parts.

研究人员正在探索涡虫如何再生失去的身体部位。

10.The flat body structure of a planarian 涡虫 allows it to thrive in aquatic environments.

一种涡虫扁平的身体结构使其能够在水生环境中生存。

11.During our field trip, we collected samples of planarians 涡虫 from a freshwater pond.

在我们的实地考察中，我们从一个淡水池塘收集了涡虫样本。

作文

The study of biology often leads us to explore the fascinating world of different organisms, and one such intriguing group is the planarian. 涡虫 are flatworms that belong to the class Turbellaria. These creatures are known for their remarkable regenerative abilities, making them a subject of interest not only in biological research but also in the fields of medicine and regenerative therapy. Planarians are predominantly found in freshwater environments, although some species inhabit marine and terrestrial ecosystems. They exhibit a simple body plan, characterized by a soft, flattened shape, which allows them to glide effortlessly through their habitats. One of the most striking features of planarians 涡虫 is their ability to regenerate lost body parts. If a planarian 涡虫 is cut into pieces, each fragment can develop into a complete organism, a process that has fascinated scientists for decades. This regenerative capability stems from a population of pluripotent stem cells known as neoblasts, which can differentiate into various cell types needed for regeneration.The anatomy of a planarian 涡虫 is relatively simple yet highly efficient. They possess a pair of eyespots that can detect light, allowing them to navigate their environment. Their bodies are covered with cilia, tiny hair-like structures that aid in locomotion. Planarians 涡虫 also have a unique digestive system, featuring a mouth located on the underside of their body, which leads to a gastrovascular cavity. This cavity serves both digestive and circulatory functions, distributing nutrients throughout the organism.In addition to their biological significance, planarians 涡虫 have become important models in scientific research. Studies involving these flatworms contribute valuable insights into cellular processes, tissue regeneration, and even the mechanisms of aging. Researchers are particularly interested in understanding how planarians 涡虫 can regenerate their nervous systems, as this knowledge may have implications for regenerative medicine in humans. Moreover, the genetic basis of regeneration in planarians 涡虫 is an active area of investigation. Scientists are exploring the genes and molecular pathways involved in the regeneration process, aiming to uncover the secrets behind their extraordinary healing capabilities. This research could pave the way for developing new treatments for injuries and degenerative diseases in humans.In conclusion, the planarian 涡虫 is a remarkable organism that exemplifies the wonders of nature. Its unique biological features, especially its regenerative abilities, make it an invaluable subject for scientific inquiry. As we continue to study planarians 涡虫, we unveil the mysteries of life and gain insights that may one day lead to groundbreaking advancements in medicine and biology. The exploration of these simple yet complex creatures reminds us of the interconnectedness of all living things and the potential that lies within even the smallest organisms.

生物学的研究常常引导我们探索不同生物的迷人世界，其中一个引人入胜的群体就是涡虫。涡虫是属于涡虫纲的扁形动物。这些生物以其显著的再生能力而闻名，这使它们不仅在生物研究中成为一个有趣的主题，也在医学和再生疗法领域中引起了关注。涡虫主要生活在淡水环境中，尽管一些物种栖息在海洋和陆地生态系统中。它们展现出简单的身体结构，特征是柔软的扁平形状，使它们能够轻松滑行于栖息地。涡虫最引人注目的特征之一是它们再生失去的身体部位的能力。如果一只涡虫被切成几块，每个碎片都可以发展成一个完整的生物，这一过程吸引了科学家们几十年的关注。这种再生能力源于一种称为新芽细胞的多能干细胞群体，这些细胞可以分化为再生所需的各种细胞类型。涡虫的解剖结构相对简单但高效。它们拥有一对可以探测光线的眼点，使它们能够导航其环境。它们的身体表面覆盖着纤毛，这些微小的毛状结构有助于运动。涡虫还有一个独特的消化系统，嘴位于身体的底面，通向一个胃肠腔。这个腔体同时具有消化和循环功能，将营养物质分配到整个生物体。除了生物学意义外，涡虫已成为科学研究中的重要模型。这些扁形动物的研究为细胞过程、组织再生甚至衰老机制提供了宝贵的见解。研究人员特别感兴趣的是了解涡虫如何再生其神经系统，因为这些知识可能对人类的再生医学产生影响。此外，涡虫再生的遗传基础是一个积极的研究领域。科学家们正在探索参与再生过程的基因和分子通路，旨在揭示它们非凡愈合能力背后的秘密。这项研究可能为开发治疗伤害和退行性疾病的新方法铺平道路。总之，涡虫是一种非凡的生物，体现了自然的奇迹。其独特的生物特征，尤其是再生能力，使其成为科学探究中不可或缺的主题。随着我们继续研究涡虫，我们揭示生命的奥秘，并获得可能最终导致医学和生物学突破性进展的见解。这些简单而复杂的生物的探索提醒我们所有生物之间的相互联系以及即使是最小生物体内蕴藏的潜力。