blastula

简明释义

英[ˈblæstjʊlə]美[ˈblæstʃʊlə]

n. 囊胚，囊胚泡

复 数 b l a s t u l a e 或 b l a s t u l a s

英英释义

单词用法

同义词

反义词

例句

1.The cells of the blastula, called blastomeres, also each receive a full diploid set of chromosomes.

这些囊胚细胞，称卵裂球，每个细胞都有一套二倍体染色体组。

2.The results indicated that the fertilized eggs in blastula stage and yolk-sac larva of Paralichthys olivaceus were more sensitive to algal toxin than those in other development stages.

实验结果表明，原肠期前的发育卵和初孵仔鱼对赤潮异弯藻较其他发育阶段更为敏感。

3.The average yield of abstraction phytin form the delipid corn blastula was 75%, and the average yield of conversionphytic acid from phytin was 77.02%.

从玉米胚中提取菲汀的平均收率为75%，菲汀转化为植酸的平均率为77.02%。

4.The results indicated that the fertilized eggs in blastula stage and yolk-sac larva of Paralichthys olivaceus were more sensitive to algal toxin than those in other development stages.

实验结果表明，原肠期前的发育卵和初孵仔鱼对赤潮异弯藻较其他发育阶段更为敏感。

5.Researchers study the blastula stage to understand how cell differentiation begins.

研究人员研究胚泡阶段，以了解细胞分化是如何开始的。

6.In many species, the blastula is a critical phase that sets the stage for organ development.

在许多物种中，胚泡是为器官发育奠定基础的关键阶段。

7.The transition from zygote to blastula involves several rounds of cell division.

从合子到胚泡的过渡涉及几轮细胞分裂。

8.The process of gastrulation follows the formation of the blastula, leading to the development of different tissue layers.

在胚泡形成之后，发生了原肠胚形成的过程，导致不同组织层的发育。

9.During early embryonic development, the fertilized egg transforms into a structure known as a blastula, which is a hollow sphere of cells.

在早期胚胎发育过程中，受精卵转变为一种称为胚泡的结构，它是一个空心的细胞球。

作文

The process of embryonic development is a fascinating journey that begins with a single fertilized egg. This egg undergoes numerous divisions and transformations, eventually leading to the formation of a structure known as the blastula. The term blastula refers to an early stage in embryonic development, characterized by a hollow ball of cells. At this stage, the embryo is composed of a layer of cells surrounding a fluid-filled cavity called the blastocoel. Understanding the significance of the blastula is crucial for comprehending how complex organisms develop from a single cell.During the initial stages of development, after fertilization, the zygote begins to divide through a process known as cleavage. These rapid divisions produce multiple cells, which are initially all identical. As these cells continue to divide, they move towards the formation of the blastula. The transition from a solid mass of cells to the hollow structure of the blastula marks a significant milestone in development. This transformation is not just a change in shape, but it also sets the stage for further differentiation of cells.The blastula stage is essential because it establishes the basic body plan of the organism. The cells in the blastula will eventually give rise to various tissues and organs. This process of cell differentiation is guided by a combination of genetic instructions and environmental signals. As the cells within the blastula begin to specialize, they will migrate and reorganize to form distinct layers, leading to the formation of the three primary germ layers: ectoderm, mesoderm, and endoderm.Each of these layers will contribute to different systems and structures within the developing organism. For instance, the ectoderm will develop into the skin and nervous system, while the mesoderm will form the muscles, bones, and circulatory system. The endoderm will give rise to the internal organs, such as the digestive tract and lungs. Thus, the significance of the blastula extends beyond its physical form; it is a critical phase in establishing the foundation for all future development.In addition to its biological importance, the study of the blastula has implications for various fields, including medicine and biotechnology. Understanding how cells communicate and differentiate during this early stage can provide insights into developmental disorders and potential therapeutic interventions. Researchers often use model organisms, such as frogs and zebrafish, to study the blastula and observe the processes that take place during this crucial period of development.In conclusion, the blastula is more than just a simple structure; it is a pivotal stage in the journey of life. From a single fertilized egg to a complex organism, the formation of the blastula represents a remarkable transformation. By studying this stage, scientists can unlock the mysteries of development and gain a deeper understanding of how life unfolds. As we continue to explore the intricacies of embryonic development, the blastula will remain a focal point of research and discovery, shedding light on the fundamental processes that govern life itself.

胚胎发育的过程是一段迷人的旅程，从一个受精卵开始。这个卵子经历了无数次分裂和转变，最终形成一个称为胚泡的结构。术语胚泡指的是胚胎发育的早期阶段，其特征是一个中空的细胞球。在这个阶段，胚胎由一层细胞围绕着一个称为胚腔的充满液体的腔体组成。理解胚泡的重要性对于理解复杂生物如何从单个细胞发展而来至关重要。在发育的初始阶段，受精后，合子开始通过一种称为裂变的过程进行分裂。这些快速的分裂产生多个细胞，这些细胞最初都是相同的。随着这些细胞继续分裂，它们朝着形成胚泡的方向发展。从一个固体细胞团到胚泡的中空结构的转变标志着发育中的一个重要里程碑。这种转变不仅仅是形状的变化，它还为进一步的细胞分化奠定了基础。胚泡阶段至关重要，因为它建立了生物体的基本身体计划。胚泡中的细胞最终将形成各种组织和器官。这种细胞分化的过程受到遗传指令和环境信号的共同指导。当胚泡中的细胞开始专业化时，它们将迁移并重新组织以形成不同的层，从而导致三种主要胚层的形成：外胚层、中胚层和内胚层。每一层将对正在发育的生物体内的不同系统和结构做出贡献。例如，外胚层将发育成皮肤和神经系统，而中胚层将形成肌肉、骨骼和循环系统。内胚层将形成内部器官，例如消化道和肺。因此，胚泡的重要性超越了其物理形式；它是建立所有未来发育基础的关键阶段。除了生物学上的重要性，对胚泡的研究对医学和生物技术等多个领域也有影响。理解细胞在这一早期阶段如何相互沟通和分化，可以为发育障碍和潜在的治疗干预提供见解。研究人员通常使用青蛙和斑马鱼等模式生物来研究胚泡，观察在这一关键发育时期发生的过程。总之，胚泡不仅仅是一个简单的结构；它是生命旅程中的一个关键阶段。从一个受精卵到一个复杂的生物体，胚泡的形成代表了一种显著的转变。通过研究这一阶段，科学家可以揭开发育的奥秘，并更深入地理解生命是如何展开的。随着我们继续探索胚胎发育的复杂性，胚泡将始终是研究和发现的焦点，揭示支配生命本身的基本过程。