somite

简明释义

英[ˈsəʊmaɪt]美[ˈsoʊmaɪt]

n. [动] 体节

英英释义

单词用法

同义词

反义词

例句

1.The researchers used fast neutrons to irradiate mouse embryos between the blastocyst stage and the beginning of somite formation.

研究人员用快中子照射在胚泡期和体节形成开始之间的小鼠胚胎。

2.The researchers used fast neutrons to irradiate mouse embryos between the blastocyst stage and the beginning of somite formation.

研究人员用快中子照射在胚泡期和体节形成开始之间的小鼠胚胎。

3.The segmentation of the vertebrate body plan begins with the formation of somites.

脊椎动物身体结构的分段始于体节的形成。

4.Research shows that defects in somite formation can lead to serious developmental disorders.

研究表明，体节形成的缺陷可能导致严重的发育障碍。

5.Scientists study somite development to understand how vertebrates evolve.

科学家研究体节发育以理解脊椎动物如何进化。

6.Each somite gives rise to specific muscles and vertebrae in the developing embryo.

每个体节在发育中的胚胎中产生特定的肌肉和脊椎。

7.During embryonic development, each segment of the body is formed from a single somite.

在胚胎发育过程中，身体的每个部分都是由一个单独的体节形成的。

作文

The study of embryonic development is a fascinating field that reveals the intricate processes involved in the formation of living organisms. One of the key structures that emerge during the early stages of development is the somite, which plays a crucial role in the segmentation of the body plan in vertebrates. Somite refers to the blocks of mesoderm that form along the sides of the neural tube in the developing embryo. These structures are pivotal for the organization of the body, as they give rise to important components such as the vertebrae, skeletal muscles, and dermis of the skin.During the process of somitogenesis, which is the formation of somites, the mesodermal tissue differentiates into these segmented blocks. This process is tightly regulated by various signaling pathways, including those involving fibroblast growth factors (FGFs) and Wnt proteins. The precise timing and patterning of somite formation are essential for proper body plan organization. If somites do not form correctly, it can lead to significant developmental abnormalities.Each somite is initially formed from paraxial mesoderm and is responsible for giving rise to specific structures in the body. For instance, the first few somites contribute to the formation of the skull and the upper cervical vertebrae, while subsequent somites will develop into the thoracic, lumbar, and sacral regions of the spine. Furthermore, somites also play a role in the development of muscle tissues. Each somite is innervated by a specific spinal nerve, which establishes a connection between the nervous system and the developing musculature.The importance of somites extends beyond just structural development; they also provide insights into evolutionary biology. By studying the patterns of somite formation in different species, researchers can uncover how vertebrate body plans have evolved over time. For example, variations in the number and arrangement of somites can be observed across species, highlighting the diversity of vertebrate morphology.In conclusion, the concept of somite is fundamental to our understanding of vertebrate embryology and development. These structures are not merely blocks of cells; they are integral to the organization of the body and the establishment of the overall body plan. As research continues to advance, we gain deeper insights into how somites contribute to the complexity of life and how disruptions in their formation can lead to congenital disorders. Understanding somites thus opens up new avenues for scientific inquiry, with implications for developmental biology, genetics, and medicine. The study of somites is a testament to the beauty and complexity of life, revealing how intricate processes work together to create the diverse forms of organisms we see around us today.

胚胎发育的研究是一个迷人的领域，揭示了生命体形成过程中涉及的复杂过程。在发育的早期阶段，出现的关键结构之一是体节，它在脊椎动物体型分段中发挥着至关重要的作用。体节是指在发育中的胚胎神经管两侧形成的中胚层块。这些结构对于身体的组织至关重要，因为它们产生了重要的组成部分，如脊椎、骨骼肌和皮肤的真皮。在体节形成过程中，即体节发生的过程，中胚层组织分化为这些分段块。该过程受到各种信号通路的严格调控，包括成纤维生长因子（FGFs）和Wnt蛋白的参与。体节形成的准确时机和模式对于正确的身体计划组织至关重要。如果体节未能正确形成，可能会导致显著的发育异常。每个体节最初由旁轴中胚层形成，并负责产生身体中的特定结构。例如，前几个体节有助于头骨和上颈椎的形成，而随后的体节则发展为胸部、腰部和骶部的脊柱。此外，体节还在肌肉组织的发展中发挥作用。每个体节都由特定的脊神经支配，建立了神经系统与发育肌肉之间的联系。体节的重要性不仅限于结构发展；它们还为进化生物学提供了见解。通过研究不同物种中体节形成的模式，研究人员可以揭示脊椎动物体型如何随着时间的推移而演变。例如，可以观察到不同物种之间在体节数量和排列上的变化，突显了脊椎动物形态的多样性。总之，体节的概念是我们理解脊椎动物胚胎学和发育的基础。这些结构不仅仅是细胞块；它们是身体组织和整体身体计划建立的不可或缺的部分。随着研究的不断进展，我们对体节如何促进生命的复杂性以及其形成中的干扰如何导致先天性疾病的理解也越来越深入。因此，理解体节为科学探究开辟了新的途径，对发育生物学、遗传学和医学具有深远的影响。对体节的研究证明了生命的美丽和复杂性，揭示了复杂过程如何协同工作，以创造我们今天所看到的各种生物形式。