vitellus

简明释义

英[vɪˈteləs]美[vɪˈteləs]

n. [动] 蛋黄；[胚] 卵黄

复 数 v i t e l l u s e s 或 v i t e l l i

英英释义

单词用法

同义词

反义词

例句

1.The embryo develops from the fertilized egg, utilizing the nutrients stored in the vitellus.

胚胎从受精卵中发育，利用储存在卵黄中的养分。

2.The presence of a large vitellus often indicates a high energy reserve for the developing embryo.

较大的卵黄通常表明发育中的胚胎有高能量储备。

3.In many fish species, the size of the vitellus can determine the survival rate of the larvae.

在许多鱼类中，卵黄的大小可以决定幼虫的存活率。

4.During the study of embryology, we observed how the vitellus is absorbed by the developing cells.

在胚胎学研究中，我们观察到如何被发育细胞吸收的卵黄。

5.In reptiles, the vitellus provides essential nutrients that support the growth of the embryo in the egg.

在爬行动物中，卵黄提供了支持蛋内胚胎生长的必要养分。

作文

The study of embryology has revealed many fascinating aspects of how life begins. One of the key components in the early stages of development is the substance known as vitellus. In simple terms, vitellus refers to the yolk of an egg, which serves as a nutrient-rich source for the developing embryo. Understanding the role of vitellus is crucial for anyone interested in biology or the life sciences. In most animals, the vitellus provides essential nutrients that support growth and development before the embryo can begin to feed independently. For example, in birds, the vitellus is not only a source of energy but also contains proteins, vitamins, and minerals necessary for the formation of organs and tissues. The size and quality of the vitellus can significantly influence the health and viability of the embryo. In addition to its nutritional value, the vitellus plays a vital role in the process of cell division and differentiation. During fertilization, the sperm penetrates the egg, and the vitellus becomes a critical environment where the zygote begins to develop. As the cells divide, they utilize the resources from the vitellus to fuel their growth, leading to the formation of various tissues and organs. Interestingly, the amount of vitellus can vary greatly among different species. For instance, fish eggs typically contain less vitellus compared to bird eggs. This difference can be attributed to the varying reproductive strategies employed by different species. Fish often lay hundreds or thousands of eggs with minimal vitellus, relying on the sheer number of offspring to ensure that at least some survive. On the other hand, birds invest more energy into fewer eggs, providing a larger vitellus to increase the chances of survival for each individual embryo. Moreover, the study of vitellus extends beyond just the understanding of embryonic development. Researchers have been exploring the potential applications of vitellus in various fields, including medicine and nutrition. For example, the proteins found in vitellus are being studied for their potential benefits in wound healing and tissue regeneration. Additionally, the use of vitellus in dietary supplements has gained popularity due to its high nutrient content. In conclusion, the significance of vitellus in the development of embryos cannot be overstated. It serves as a vital source of nutrients that supports growth and development during the earliest stages of life. As we continue to explore the complexities of biology, understanding the role of vitellus will undoubtedly contribute to advancements in both science and medicine. Through this exploration, we can appreciate the intricate processes that govern life and the importance of every component involved, including the humble yet essential vitellus.

胚胎学的研究揭示了生命开始时许多迷人的方面。在发育的早期阶段，关键成分之一是被称为vitellus的物质。简单来说，vitellus指的是蛋黄，它作为营养丰富的来源为发育中的胚胎提供支持。理解vitellus的作用对任何对生物学或生命科学感兴趣的人来说都是至关重要的。在大多数动物中，vitellus提供了支持生长和发育的基本营养素，直到胚胎能够独立进食。例如，在鸟类中，vitellus不仅是能量的来源，还含有形成器官和组织所需的蛋白质、维生素和矿物质。vitellus的大小和质量可以显著影响胚胎的健康和生存能力。除了其营养价值外，vitellus在细胞分裂和分化的过程中也发挥着至关重要的作用。在受精过程中，精子穿透卵子，vitellus成为一个关键环境，在这里，合子开始发育。当细胞分裂时，它们利用来自vitellus的资源来推动生长，从而形成各种组织和器官。有趣的是，不同物种之间的vitellus数量差异很大。例如，鱼卵通常含有比鸟卵更少的vitellus。这种差异可以归因于不同物种采用的繁殖策略。鱼类通常会产下数百或数千个卵子，而vitellus则较少，依赖于后代的数量确保至少有一些存活。另一方面，鸟类在较少的卵子上投入更多的能量，提供更大的vitellus以增加每个个体胚胎的生存机会。此外，vitellus的研究不仅限于理解胚胎发育。研究人员一直在探索vitellus在医学和营养等各个领域的潜在应用。例如，发现vitellus中的蛋白质可能在伤口愈合和组织再生中具有潜在益处。此外，因其高营养含量，vitellus在膳食补充剂中的使用也越来越受欢迎。总之，vitellus在胚胎发育中的重要性不容小觑。它作为营养素的重要来源，支持生命最早阶段的生长和发育。随着我们继续探索生物学的复杂性，理解vitellus的作用无疑将为科学和医学的进步做出贡献。通过这一探索，我们可以欣赏支配生命的复杂过程以及每个组成部分的重要性，包括谦卑而又必不可少的vitellus。