myofibrillar

简明释义

英[ˌmaɪoʊˈfɪbrɪlər]美[ˌmaɪoʊˈfɪbrɪlər]

肌纤维的

英英释义

单词用法

同义词

反义词

例句

1.Myofibrillar fragmentation, swelling of the cardiac myocytes, absence of the Z line, increases of the mitochondria and collagen fibers were found in ouabain group by transmission electron microscopy.

透射电镜观察显示，哇巴因组大鼠心肌细胞肿胀，肌纤维断裂，Z线消失，线粒体增生肿胀，部分空泡化，细胞间胶原纤维增生。

2.The effect of soybean trypsin inhibitor (STI) on the degradation of silver carp myofibrillar proteins caused by an endogenous myofibril-bound serine proteinase (MBSP) was studied.

研究了大豆胰蛋白酶抑制剂（STI）对鲢肌肉中肌原纤维结合型丝氨酸蛋白酶（MBSP）引起的肌原纤维蛋白降解作用的影响。

3.The myofibrillar protein extraction rate can be used as an important index to distinguish PSE and normal pork.

肌原纤维蛋白质抽提率可作为鉴别P SE肉与正常肉的重要指标。

4.Aim: To detect effect of the different frequency of chronic electrical stimulation (CES) on myofibrillar isoform, myosin heavy chain (MHC) and metabolic enzyme activities.

目的：探讨不同频率慢性电刺激对膈肌肌纤维亚型、肌球蛋白重链(mhc)亚型和代谢酶活性的适应性变化的影响。

5.Myofibrillar fragmentation, swelling of the cardiac myocytes, absence of the Z line, increases of the mitochondria and collagen fibers were found in ouabain group by transmission electron microscopy.

透射电镜观察显示，哇巴因组大鼠心肌细胞肿胀，肌纤维断裂，Z线消失，线粒体增生肿胀，部分空泡化，细胞间胶原纤维增生。

6.Researchers found that resistance training enhances myofibrillar 肌纤维的 growth in older adults.

研究人员发现，抗阻训练增强了老年人肌纤维的生长。

7.Increased myofibrillar 肌纤维的 density can lead to improved athletic performance.

增加的肌纤维的密度可以提高运动表现。

8.The myofibrillar 肌纤维的 structure is essential for muscle contraction.

肌纤维的结构对肌肉收缩至关重要。

9.Different types of exercise can influence myofibrillar 肌纤维的 adaptations in the body.

不同类型的运动可以影响身体中肌纤维的适应性。

10.The study focused on the role of myofibrillar 肌纤维的 protein synthesis in muscle hypertrophy.

这项研究专注于肌肉肥大中肌纤维的蛋白质合成的作用。

作文

Muscle contraction is a complex physiological process that involves various components working in harmony. Among these components, the most critical are the myofibrils, which are the basic rod-like units of a muscle cell. The term myofibrillar refers to anything related to these myofibrils, particularly their structure and function in muscle tissue. Understanding the role of myofibrillar proteins is essential for comprehending how muscles contract and generate force.Myofibrils are composed of long chains of proteins, primarily actin and myosin, which interact to produce muscle contractions. The arrangement of these proteins within the myofibrillar structure allows for the sliding filament mechanism, where actin filaments slide over myosin filaments to shorten the muscle fiber during contraction. This process is not only vital for voluntary movements, such as walking and lifting but also for involuntary actions like the heartbeat.In addition to their role in contraction, myofibrillar proteins are crucial for muscle growth and repair. When we engage in physical activities, especially resistance training, our muscles experience micro-tears. This damage triggers a biological response that includes the synthesis of new myofibrillar proteins to repair and strengthen the muscle fibers. This process is known as muscle hypertrophy, where the cross-sectional area of the muscle increases due to the addition of new proteins.Research has shown that different types of exercise can influence the composition and amount of myofibrillar proteins in the muscles. For instance, endurance training typically increases the proportion of slow-twitch muscle fibers, which are rich in myofibrillar proteins, enhancing stamina and endurance. In contrast, strength training focuses on fast-twitch fibers, which are more powerful and larger, leading to greater muscle mass and strength.Moreover, nutrition plays a pivotal role in supporting the synthesis of myofibrillar proteins. Consuming adequate amounts of protein from sources such as meat, dairy, and legumes provides the building blocks necessary for muscle repair and growth. Studies suggest that a diet rich in high-quality protein can significantly enhance myofibrillar protein synthesis, especially when consumed post-exercise.In conclusion, the concept of myofibrillar proteins is fundamental to understanding muscle physiology. These proteins not only facilitate muscle contraction but also play a critical role in muscle growth and repair. By recognizing the importance of myofibrillar structures in our muscles, we can better appreciate the intricate processes that allow us to perform everyday activities and maintain our physical health. As we continue to explore the science behind muscle function, the significance of myofibrillar proteins will undoubtedly remain a focal point in both research and practical applications in fitness and rehabilitation.

肌肉收缩是一个复杂的生理过程，涉及多个组件的协调工作。在这些组件中，最关键的是肌原纤维，它们是肌肉细胞的基本棒状单元。术语myofibrillar指的是与这些肌原纤维相关的任何事物，特别是它们在肌肉组织中的结构和功能。理解myofibrillar蛋白质的作用对于理解肌肉如何收缩和产生力量至关重要。肌原纤维由长链蛋白质组成，主要是肌动蛋白和肌球蛋白，这些蛋白质相互作用以产生肌肉收缩。这些蛋白质在myofibrillar结构中的排列使得滑动丝机制成为可能，在这个机制中，肌动蛋白丝在收缩过程中滑过肌球蛋白丝，从而缩短肌肉纤维。这一过程不仅对自愿运动（如行走和举重）至关重要，也对心跳等不随意动作至关重要。除了在收缩中的作用外，myofibrillar蛋白质对肌肉的生长和修复也至关重要。当我们进行身体活动，特别是抗阻训练时，我们的肌肉会经历微小的撕裂。这种损伤会触发生物反应，包括合成新的myofibrillar蛋白质，以修复和增强肌肉纤维。这个过程被称为肌肉肥大，肌肉的横截面积因新蛋白质的增加而增大。研究表明，不同类型的锻炼可以影响肌肉中myofibrillar蛋白质的组成和数量。例如，耐力训练通常增加慢肌纤维的比例，而这些纤维富含myofibrillar蛋白质，从而增强耐力和持久性。相反，力量训练则侧重于快肌纤维，这些纤维更强大且体积更大，导致更大的肌肉质量和力量。此外，营养在支持myofibrillar蛋白质合成中起着关键作用。从肉类、乳制品和豆类等来源摄入足够的蛋白质为肌肉修复和生长提供必要的构建块。研究表明，富含高质量蛋白质的饮食在运动后摄入时可以显著增强myofibrillar蛋白质的合成。总之，myofibrillar蛋白质的概念对于理解肌肉生理学至关重要。这些蛋白质不仅促进肌肉收缩，还在肌肉生长和修复中发挥关键作用。通过认识到myofibrillar结构在我们肌肉中的重要性，我们可以更好地欣赏允许我们执行日常活动并维持身体健康的复杂过程。随着我们继续探索肌肉功能背后的科学，myofibrillar蛋白质的重要性无疑将继续成为研究和健身及康复实践应用的重点。