acrosome

简明释义

英[ˈækrəˌsəʊm]美[ˈækrəˌsoʊm]

n. （精子的）顶体，顶体精子

英英释义

单词用法

同义词

反义词

例句

1.Under the acrosome, the nucleus is egg shaped with high density.

顶体下方为细胞核，细胞核近似卵圆形。

2.The outer and inner membranes of acrosome are different from the plasma membrane.

顶体的内、外膜结构不同于质膜。

3.The head is composed of acrosome and nucleus.

头部由顶体与细胞核构成。

4.The change of acrosomal morphology may be classified into 10 categories: (1) plasma membrane and acrosome intact.

按顶体的形态可以划分为十种类型：(1)原生质膜及顶体完好。

5.The change of acrosomal morphology may be classified into 10 categories: (1) plasma membrane and acrosome intact.

按顶体的形态可以划分为十种类型：(1)原生质膜及顶体完好。

6.Defects in the acrosome can lead to infertility in males.

顶体的缺陷可能导致男性不育。

7.The structure of the acrosome is crucial for the sperm to successfully reach and fertilize the egg.

顶体的结构对于精子成功到达并受精卵子至关重要。

8.Researchers study the acrosome reaction to understand male fertility issues.

研究人员研究顶体反应，以了解男性生育问题。

9.During the process of fertilization, the acrosome releases its contents to penetrate the egg's outer layer.

在受精过程中，顶体释放其内容物以穿透卵子的外层。

10.The sperm cell's head is covered by an acrosome, which contains enzymes necessary for fertilization.

精子细胞的头部被一个顶体覆盖，里面含有受精所需的酶。

作文

The process of fertilization is a remarkable event that marks the beginning of a new life. At its core, this intricate process relies on the interaction between sperm and egg cells. One of the key components involved in this interaction is the acrosome, a specialized structure found at the tip of the sperm cell. The acrosome is crucial for the sperm's ability to penetrate the protective layers surrounding the egg, allowing for successful fertilization. To understand the role of the acrosome, it is important to first consider the anatomy of the sperm cell. Sperm cells are uniquely designed for their purpose, with a head, midpiece, and tail. The head contains genetic material, while the midpiece provides energy for movement. However, it is the acrosome that plays a pivotal role in the fertilization process. The acrosome is filled with enzymes that are released during the sperm's journey towards the egg. These enzymes help to break down the zona pellucida, a glycoprotein layer that surrounds the egg. Once the enzymes from the acrosome successfully degrade the zona pellucida, the sperm can then fuse with the egg's membrane, leading to fertilization. This enzymatic action is not just a random occurrence; it is a finely tuned mechanism that has evolved over millions of years to ensure the continuation of species. Moreover, the importance of the acrosome extends beyond mere penetration. It also plays a role in recognizing and binding to the egg. The proteins present on the surface of the acrosome interact with receptors on the egg, facilitating a connection that is essential for the fusion of the two cells. Without this interaction, even if the sperm reaches the egg, fertilization may not occur. In conclusion, the acrosome is an essential component of the sperm cell that enables successful fertilization. Its role in breaking down the zona pellucida and facilitating the binding process between sperm and egg highlights its significance in reproductive biology. Understanding the function of the acrosome not only sheds light on the complexities of fertilization but also emphasizes the delicate balance of interactions that are necessary for the creation of new life. As research continues to advance in the field of reproductive science, the acrosome remains a topic of great interest, providing insights into fertility and potential treatments for infertility issues.

受精过程是一个显著的事件，标志着新生命的开始。在这个复杂的过程中，精子和卵细胞之间的相互作用至关重要。参与这一互动的关键组成部分之一是顶体，它是位于精子细胞顶端的一个特殊结构。顶体对于精子穿透包围卵子的保护层的能力至关重要，从而使成功的受精成为可能。要理解顶体的作用，首先需要考虑精子细胞的解剖结构。精子细胞被独特地设计用于其目的，具有头部、中段和尾部。头部包含遗传物质，而中段为运动提供能量。然而，正是顶体在受精过程中发挥了关键作用。顶体充满了在精子向卵子移动过程中释放的酶。这些酶有助于分解包围卵子的透明带，这是一层糖蛋白层。一旦顶体中的酶成功降解了透明带，精子就可以与卵子的膜融合，从而导致受精。这种酶的作用并不是偶然发生的；它是经过数百万年进化而成的精细机制，以确保物种的延续。此外，顶体的重要性不仅仅限于穿透。它还在识别和结合卵子中发挥作用。顶体表面上的蛋白质与卵子上的受体相互作用，促进了两细胞融合所必需的连接。如果没有这种相互作用，即使精子到达卵子，受精也可能不会发生。总之，顶体是精子细胞的一个重要组成部分，使成功受精成为可能。它在分解透明带和促进精子与卵子之间结合过程中的作用突显了它在生殖生物学中的重要性。理解顶体的功能不仅揭示了受精的复杂性，还强调了创造新生命所需的相互作用的微妙平衡。随着生殖科学领域的研究不断推进，顶体仍然是一个备受关注的话题，为生育和潜在的生育问题治疗提供了见解。