acrosomal

简明释义

英[əˈkrōzəməl]美[əˈkrōzəməl]

顶体的

英英释义

单词用法

同义词

反义词

例句

1.The membrane complex area, which lies between the nucleus and the acrosomal region, contains numerous lamellar membrane structure and vesicle which originate from the lamellar membrane structure.

膜复合物区位于核与顶体之间，由许多膜片层结构及其衍生的囊泡共同组成。

2.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。

3.The membrane complex area, which lies between the nucleus and the acrosomal region, contains numerous lamellar membrane structure and vesicle which originate from the lamellar membrane structure.

膜复合物区位于核与顶体之间，由许多膜片层结构及其衍生的囊泡共同组成。

4.The sperm's acrosomal 顶体的 reaction is crucial for fertilization.

精子的顶体的反应对受精至关重要。

5.The acrosomal 顶体的 membrane fusion is a key step in the fertilization process.

顶体的膜融合是受精过程中的关键步骤。

6.Researchers studied the acrosomal 顶体的 structure of different species to understand reproductive strategies.

研究人员研究了不同物种的顶体的结构，以了解繁殖策略。

7.During the acrosomal 顶体的 reaction, enzymes are released to help penetrate the egg's outer layer.

在顶体的反应中，酶被释放以帮助穿透卵子的外层。

8.Defects in the acrosomal 顶体的 function can lead to male infertility.

在顶体的功能上的缺陷可能导致男性不育。

作文

The process of fertilization is a complex and fascinating phenomenon that involves many biological mechanisms. One crucial aspect of this process is the role of the sperm cell, particularly the structure known as the acrosome. The acrosome is a cap-like structure that covers the anterior half of the sperm's head, and it is filled with enzymes that are essential for penetrating the outer layers of the egg. When a sperm approaches an egg, the acrosomal reaction is triggered, which involves the release of these enzymes. This reaction is critical for allowing the sperm to breach the protective barriers surrounding the egg, ultimately leading to fertilization.The acrosomal reaction begins when the sperm binds to the zona pellucida, a glycoprotein layer surrounding the oocyte. Upon binding, the acrosome undergoes a dramatic change, releasing its enzymes, such as hyaluronidase and acrosin. These enzymes help digest the zona pellucida, enabling the sperm to swim through and reach the egg's plasma membrane. Without the proper functioning of the acrosomal (顶体的) structure, the sperm would be unable to penetrate the egg, preventing fertilization from occurring.In addition to its role in fertilization, the acrosome also plays a part in the overall motility and viability of the sperm. Sperm cells must be healthy and functional to successfully navigate the female reproductive tract and reach the egg. The integrity of the acrosomal (顶体的) membrane is vital for maintaining the sperm's ability to respond to chemotactic signals released by the egg. These signals guide the sperm towards the egg, ensuring that only the most viable sperm can succeed in the fertilization process.Research has shown that abnormalities in the acrosomal (顶体的) structure can lead to male infertility. For instance, if the acrosome is malformed or if the enzymes it contains are not produced in sufficient quantities, the sperm may lack the necessary tools to penetrate the egg effectively. This highlights the importance of the acrosomal (顶体的) function not only in the mechanics of fertilization but also in the broader context of reproductive health.Understanding the role of the acrosomal (顶体的) structure has implications for both clinical and research settings. In assisted reproductive technologies, such as in vitro fertilization (IVF), evaluating the acrosome's integrity can provide valuable insights into sperm quality. Techniques such as the acrosome reaction test can help identify viable sperm that are capable of successful fertilization. Furthermore, studies on the acrosome may lead to the development of new contraceptive methods or treatments for male infertility by targeting the mechanisms involved in the acrosomal reaction.In conclusion, the acrosomal (顶体的) structure is a key player in the fertilization process. Its role in facilitating sperm penetration of the egg and maintaining sperm viability underscores its significance in reproductive biology. As research continues to uncover the complexities of fertilization, the understanding of the acrosomal (顶体的) function will undoubtedly enhance our knowledge of fertility and infertility, paving the way for advancements in reproductive health and medicine.

受精过程是一种复杂而迷人的现象，涉及许多生物机制。这个过程中的一个关键方面是精子细胞的作用，特别是被称为顶体的结构。顶体是覆盖在精子头部前半部分的帽状结构，里面充满了穿透卵子外层所必需的酶。当精子接近卵子时，会触发顶体反应，这一反应涉及这些酶的释放。这一反应对于让精子突破包围卵子的保护屏障至关重要，最终导致受精。顶体反应始于精子与透明带结合，透明带是包围卵母细胞的糖蛋白层。在结合后，顶体经历了剧烈的变化，释放出其酶，如透明质酸酶和顶体酶。这些酶有助于消化透明带，使精子能够游过并到达卵子的质膜。如果顶体的结构功能不正常，精子将无法穿透卵子，从而阻止受精的发生。除了在受精中的作用外，顶体还在精子的整体运动性和生存能力中发挥作用。精子细胞必须健康且功能正常，才能成功穿越女性生殖道并到达卵子。顶体的膜的完整性对于维持精子对卵子释放的趋化信号的反应能力至关重要。这些信号引导精子朝向卵子，确保只有最具生育能力的精子能够成功完成受精过程。研究表明，顶体的结构异常可能导致男性不育。例如，如果顶体畸形或其所含酶的产生不足，精子可能缺乏有效穿透卵子的必要工具。这突显了顶体的功能在受精机制中的重要性，以及在更广泛的生殖健康背景下的重要性。理解顶体的结构的作用对临床和研究领域都有启示。在辅助生殖技术（如体外受精，IVF）中，评估顶体的完整性可以提供关于精子质量的宝贵见解。诸如顶体反应测试等技术可以帮助识别能够成功受精的有效精子。此外，对顶体的研究可能会通过针对顶体反应中涉及的机制来开发新的避孕方法或男性不育治疗。总之，顶体的结构在受精过程中扮演着关键角色。它在促进精子穿透卵子和维持精子生存能力方面的作用突显了其在生殖生物学中的重要性。随着研究不断揭示受精的复杂性，对顶体的功能的理解无疑将增强我们对生育和不育的知识，为生殖健康和医学的进步铺平道路。