ectoblast

简明释义

英[ˈɛktəˌblæst]美[ˈɛktəˌblæst]

n. （胚胎学）外胚叶；外胚层；外膜

英英释义

单词用法

同义词

反义词

例句

1.Glioma is the most common type of primary intracranial tumors in human. It developed from astrocytoma, oligodendroglioma, ependymoma, which were induced by neural ectoblast.

脑胶质瘤是由神经外胚叶衍化而来的胶质细胞即星形胶质细胞、少枝胶质细胞和室管膜胶质细胞等发生的肿瘤，是颅内最常见的恶性肿瘤。

2.It developed from astrocytoma, oligodendroglioma, ependymoma, which were induced by neural ectoblast.

它由星形细胞瘤，少突胶质细胞瘤，室管膜瘤发展而来，它们是由神经外胚层细胞诱导的。

3.Glioma is the most common type of primary intracranial tumors in human. It developed from astrocytoma, oligodendroglioma, ependymoma, which were induced by neural ectoblast.

脑胶质瘤是由神经外胚叶衍化而来的胶质细胞即星形胶质细胞、少枝胶质细胞和室管膜胶质细胞等发生的肿瘤，是颅内最常见的恶性肿瘤。

4.The development of the embryo begins with the formation of the ectoblast.

胚胎的发展始于外胚层的形成。

5.Researchers are studying how the ectoblast influences organ development.

研究人员正在研究外胚层如何影响器官发育。

6.The ectoblast is essential for the proper functioning of the integumentary system.

外胚层对外部系统的正常功能至关重要。

7.In some species, the ectoblast plays a crucial role in the formation of skin and nervous tissue.

在某些物种中，外胚层在皮肤和神经组织的形成中起着至关重要的作用。

8.During embryogenesis, the cells of the ectoblast differentiate into various tissues.

在胚胎发生过程中，外胚层的细胞分化成各种组织。

作文

The study of biology encompasses various fascinating concepts, one of which is the term ectoblast. In embryology, ectoblast refers to the outer layer of cells that eventually develops into the epidermis and nervous system. This term is crucial for understanding how organisms develop from a single fertilized egg into complex structures with specialized functions. The significance of ectoblast can be seen in various biological processes, including cellular differentiation and organogenesis.To illustrate the role of ectoblast, let us consider the early stages of embryonic development. After fertilization, the zygote undergoes several rounds of cell division, leading to the formation of a blastula. At this stage, the cells begin to differentiate into different layers, namely the ectoderm, mesoderm, and endoderm. The ectoblast, or ectoderm, is particularly vital as it gives rise to structures such as skin, hair, nails, and the entire nervous system, including the brain and spinal cord.Understanding the function of ectoblast is essential for fields like developmental biology and medicine. For instance, researchers are investigating how abnormalities in the development of the ectoblast can lead to congenital disorders. Conditions like spina bifida and various skin disorders can arise from improper formation or differentiation of these outer-layer cells. Furthermore, advancements in regenerative medicine often focus on utilizing stem cells derived from the ectoblast to repair or replace damaged tissues.Moreover, the concept of ectoblast extends beyond human biology. In many animals, the formation of the ectoderm plays a similar role in development. For example, in amphibians, the ectoblast not only contributes to the skin but also to the development of the neural tube, which is crucial for proper nervous system function. This similarity across species highlights the evolutionary importance of the ectoblast in multicellular organisms.In addition to its biological implications, the term ectoblast also encourages discussions about the broader philosophical questions surrounding life and development. What does it mean to be alive? How do simple cells organize themselves into complex systems? The study of ectoblast and its derivatives can provide insights into these profound questions, bridging the gap between science and philosophy.In conclusion, the term ectoblast is not merely a scientific label; it represents a critical aspect of life and development. From its role in forming essential body structures to its implications in medical research, understanding ectoblast is vital for both scientists and those interested in the intricacies of life. As we continue to explore the mysteries of biology, the ectoblast will undoubtedly remain a key area of study, revealing more about the wonders of life and the processes that govern our existence.

生物学的研究涵盖了许多迷人的概念，其中一个术语是ectoblast。在胚胎学中，ectoblast指的是最终发育成表皮和神经系统的细胞外层。这一术语对于理解有机体如何从单个受精卵发展成具有专门功能的复杂结构至关重要。ectoblast的重要性可以在多种生物过程中看到，包括细胞分化和器官发生。为了说明ectoblast的作用，让我们考虑胚胎发育的早期阶段。受精后，合子经历几轮细胞分裂，形成囊胚。在这个阶段，细胞开始分化为不同的层，即外胚层、中胚层和内胚层。ectoblast或外胚层尤其重要，因为它产生如皮肤、头发、指甲以及整个神经系统（包括大脑和脊髓）等结构。理解ectoblast的功能对发育生物学和医学等领域至关重要。例如，研究人员正在调查外胚层的发育异常如何导致先天性疾病。像脊柱裂和各种皮肤疾病等情况可能源于这些外层细胞的不当形成或分化。此外，干细胞研究的进展往往集中在利用来自ectoblast的干细胞修复或替换受损组织。此外，ectoblast的概念超越了人类生物学。在许多动物中，外胚层的形成在发育中也发挥着类似的作用。例如，在两栖动物中，ectoblast不仅有助于皮肤的形成，还对神经管的发展至关重要，而神经管对于神经系统的正常功能至关重要。这种跨物种的相似性突显了ectoblast在多细胞生物中的进化重要性。除了其生物学意义，术语ectoblast还鼓励人们讨论生命和发展的更广泛哲学问题。活着意味着什么？简单的细胞如何组织成复杂的系统？对ectoblast及其衍生物的研究可以为这些深刻的问题提供见解，架起科学与哲学之间的桥梁。总之，术语ectoblast不仅仅是一个科学标签；它代表了生命和发展的一个关键方面。从其在形成重要身体结构中的作用到其在医学研究中的意义，理解ectoblast对科学家和对生命复杂性感兴趣的人来说都是至关重要的。随着我们继续探索生物学的奥秘，ectoblast无疑将继续成为一个关键的研究领域，揭示更多关于生命的奇迹以及支配我们存在的过程。