red blood cell

简明释义

红细胞

英英释义

例句

1.A healthy diet can help maintain optimal levels of red blood cells 红血球 in the body.

健康的饮食可以帮助维持体内红血球 red blood cells 的最佳水平。

2.During the blood test, they measured the number of red blood cells 红血球 in my sample.

在血液测试中，他们测量了我样本中的红血球 red blood cells 数量。

3.The doctor explained that a low count of red blood cells 红血球 can lead to anemia.

医生解释说，红血球 red blood cells 的数量过低可能导致贫血。

4.The function of red blood cells 红血球 is to transport oxygen throughout the body.

红血球 red blood cells 的功能是将氧气运输到全身。

5.People with sickle cell disease have abnormally shaped red blood cells 红血球 that can cause blockages.

患有镰状细胞病的人有异常形状的红血球 red blood cells，可能导致血管堵塞。

作文

The human body is a complex and intricate system, with various components working together to maintain life. One of the most crucial elements in this system is the red blood cell, or as it is known in medical terms, erythrocyte. These cells play a vital role in our overall health and well-being. In this essay, I will explore the structure, function, and importance of red blood cells in the human body.Firstly, let’s discuss the structure of red blood cells. Unlike many other cells in the body, red blood cells have a unique biconcave shape that increases their surface area. This design allows for maximum oxygen absorption and efficient transport throughout the bloodstream. A mature red blood cell lacks a nucleus and other organelles, which gives more space for hemoglobin, the protein responsible for oxygen transport. Hemoglobin binds to oxygen in the lungs and releases it in the tissues, ensuring that every cell in the body receives the oxygen it needs to function.Next, the function of red blood cells cannot be overstated. Their primary role is to carry oxygen from the lungs to various tissues and organs in the body. This process is essential for cellular respiration, a metabolic process that produces energy. Without sufficient red blood cells, the body would struggle to obtain the oxygen necessary for survival, leading to fatigue, weakness, and even life-threatening conditions. Furthermore, red blood cells also help in transporting carbon dioxide, a waste product produced by cells, back to the lungs for exhalation.Moreover, the production of red blood cells occurs in the bone marrow through a process called erythropoiesis. Hormones such as erythropoietin, produced by the kidneys, stimulate the production of red blood cells in response to low oxygen levels in the blood. This regulatory mechanism ensures that the body maintains an adequate supply of red blood cells to meet its oxygen demands.The importance of red blood cells extends beyond just oxygen transport. They also play a role in maintaining the pH balance of the blood and regulating blood viscosity. An imbalance in the number of red blood cells can lead to various health issues. For instance, anemia, a condition characterized by a deficiency in red blood cells, can result in symptoms such as dizziness, shortness of breath, and paleness. On the other hand, polycythemia, which is an excess of red blood cells, can increase the risk of blood clots, stroke, and heart attack.In conclusion, red blood cells are indispensable to our health and survival. Their unique structure allows for efficient oxygen transport, while their production is carefully regulated to meet the body’s needs. Understanding the role of red blood cells helps us appreciate the complexity of the human body and underscores the importance of maintaining healthy blood levels. Regular check-ups and a balanced diet rich in iron and vitamins can help ensure that our red blood cells remain at optimal levels, supporting our overall health and vitality.

人体是一个复杂而精密的系统，各个组成部分共同作用以维持生命。在这个系统中，红血球（或称为红细胞）是最关键的元素之一。这些细胞在我们的整体健康和幸福中发挥着至关重要的作用。在这篇文章中，我将探讨红血球的结构、功能以及它们在人体中的重要性。首先，让我们讨论一下红血球的结构。与体内许多其他细胞不同，红血球具有独特的双凹形状，这增加了它们的表面积。这种设计允许最大限度地吸收氧气并在血液中高效运输。成熟的红血球缺乏细胞核和其他细胞器，这为负责氧气运输的血红蛋白提供了更多空间。血红蛋白在肺部与氧气结合，并在组织中释放，从而确保身体的每个细胞都能获得所需的氧气以正常运作。接下来，红血球的功能不可低估。它们的主要角色是将氧气从肺部输送到身体的各个组织和器官。这一过程对细胞呼吸至关重要，细胞呼吸是产生能量的代谢过程。如果没有足够的红血球，身体将难以获得生存所需的氧气，导致疲劳、虚弱甚至危及生命的状况。此外，红血球还帮助运输二氧化碳，二氧化碳是细胞产生的废物，返回肺部以供呼气。此外，红血球的生产发生在骨髓中，过程称为红细胞生成。肾脏产生的激素如促红细胞生成素在血液中氧气水平低时刺激红血球的生成。这一调节机制确保身体维持足够的红血球供应以满足其氧气需求。红血球的重要性不仅仅局限于氧气运输。它们还在维持血液的pH平衡和调节血液粘稠度方面发挥作用。红血球数量的不平衡可能导致各种健康问题。例如，贫血是一种以红血球缺乏为特征的疾病，可能导致头晕、呼吸急促和面色苍白等症状。另一方面，多血症，即红血球过多，可能增加血栓、卒中和心脏病发作的风险。总之，红血球对我们的健康和生存至关重要。它们独特的结构使氧气运输高效，而它们的生产则经过精心调节以满足身体的需求。了解红血球的作用帮助我们欣赏人体的复杂性，并强调维持健康血液水平的重要性。定期检查和富含铁和维生素的均衡饮食有助于确保我们的红血球保持在最佳水平，支持我们的整体健康和活力。