myofibrils

简明释义

英[ˌmaɪəˈfaɪbrəlz]美[ˌmaɪəˈfaɪbrəlz]

n. [组织]肌原纤维（myofibril 的复数）

英英释义

单词用法

同义词

反义词

例句

1.The cells in the HB were larger than the transitional cells, with abundant chromatin in the nuclei, more myofibers and myofibrils and branches. The intercalated disks were well developed.

房室束细胞比移行细胞大、核染色质多、肌丝和肌原纤维及其分支也多、闰盘发达完整。

2.The cells in the HB were larger than the transitional cells, with abundant chromatin in the nuclei, more myofibers and myofibrils and branches. The intercalated disks were well developed.

房室束细胞比移行细胞大、核染色质多、肌丝和肌原纤维及其分支也多、闰盘发达完整。

3.During the rounding process spontaneous contractions stopped and microtubules and myofibrils depolymerized.

在变圆过程中微管及肌原纤维解聚，自发性收缩停止。

4.Hypertrophy also allows the abnormally high pressure to be developed by a greater number of myofibrils.

肥厚也可使大量肌纤维产生异常高的压力。

5.Mitochondria are intercalated between myofibrils and completely filled the interstices between them.

肌原纤维之间充满着线粒体和横管。

6.It's structural and functional unit of myofibrils.

是肌原纤维结构和功能基本单位。

7.The structure of myofibrils is essential for muscle contraction.

肌肉收缩的结构对于肌原纤维是至关重要的。

8.Damage to the myofibrils can lead to muscle weakness.

对肌原纤维的损伤可能导致肌肉无力。

9.During exercise, the myofibrils undergo hypertrophy, increasing their size.

在运动过程中，肌原纤维经历肥大，增大其体积。

10.Research shows that protein intake can enhance the repair of myofibrils after workouts.

研究表明，蛋白质摄入可以增强锻炼后对肌原纤维的修复。

11.The alignment of myofibrils affects the strength of muscle contractions.

肌原纤维的排列影响肌肉收缩的力量。

作文

Muscle tissue is an essential component of the human body, enabling movement and maintaining posture. Within muscle fibers, there are specialized structures known as myofibrils, which play a crucial role in muscle contraction. Understanding the function and structure of myofibrils can provide insight into how our muscles work and how we can maintain their health. Myofibrils are long, thread-like structures that run parallel to the length of the muscle fiber. They are composed of repeating units called sarcomeres, which are the basic functional units of muscle contraction. Each sarcomere contains thick and thin filaments made up of proteins such as myosin and actin. The interaction between these proteins is what allows muscles to contract and generate force. During muscle contraction, the myofibrils shorten as the thick and thin filaments slide past each other, a process known as the sliding filament theory. This intricate mechanism is essential for various physical activities, from simple movements like walking to complex actions like sprinting or lifting weights. The health of myofibrils is vital for optimal muscle function. Factors such as nutrition, exercise, and rest significantly impact the integrity and performance of myofibrils. For instance, regular strength training can enhance the size and number of myofibrils within muscle fibers, leading to increased muscle strength and endurance. Additionally, adequate protein intake is crucial for the repair and growth of myofibrils, as proteins provide the building blocks necessary for muscle recovery. On the other hand, a sedentary lifestyle can lead to the deterioration of myofibrils, resulting in decreased muscle mass and strength over time. Furthermore, understanding the role of myofibrils has implications for medical science, particularly in treating muscle-related diseases. Conditions such as muscular dystrophy and sarcopenia are characterized by the degeneration of muscle fibers and myofibrils. Research into therapies that target these structures could lead to significant advancements in improving muscle health and functionality. In conclusion, myofibrils are integral to muscle function, playing a key role in contraction and overall muscle health. By prioritizing exercise, nutrition, and rest, we can support the maintenance and development of myofibrils, ensuring our muscles remain strong and functional throughout our lives. As we continue to learn more about these fascinating structures, we can better appreciate the complexity of our bodies and the importance of taking care of our muscular system.

肌肉组织是人体的重要组成部分，使运动成为可能并维持姿势。在肌肉纤维内，有一种被称为肌原纤维的特殊结构，它在肌肉收缩中发挥着至关重要的作用。理解肌原纤维的功能和结构可以帮助我们深入了解我们的肌肉如何工作以及如何保持它们的健康。肌原纤维是长而线状的结构，平行于肌肉纤维的长度延伸。它们由称为肌节的重复单元组成，肌节是肌肉收缩的基本功能单位。每个肌节包含由蛋白质如肌球蛋白和肌动蛋白构成的粗纤维和细纤维。这些蛋白质之间的相互作用使得肌肉能够收缩并产生力量。在肌肉收缩过程中，肌原纤维会缩短，因为粗纤维和细纤维相互滑动，这一过程被称为滑动丝理论。这一复杂的机制对于各种身体活动至关重要，从简单的步行到复杂的冲刺或举重等动作。肌原纤维的健康对于最佳肌肉功能至关重要。营养、锻炼和休息等因素对肌原纤维的完整性和性能有显著影响。例如，定期的力量训练可以增强肌肉纤维内肌原纤维的大小和数量，从而提高肌肉的力量和耐力。此外，适当的蛋白质摄入对肌原纤维的修复和生长至关重要，因为蛋白质提供了肌肉恢复所需的构建块。另一方面，久坐的生活方式可能导致肌原纤维的退化，导致肌肉质量和力量随时间下降。此外，理解肌原纤维的角色对医学科学具有重要意义，特别是在治疗与肌肉相关的疾病方面。肌营养不良和老年性肌肉萎缩等疾病的特征是肌肉纤维和肌原纤维的退化。针对这些结构的疗法研究可能会在改善肌肉健康和功能方面取得重大进展。总之，肌原纤维对肌肉功能至关重要，在收缩和整体肌肉健康中发挥着关键作用。通过优先考虑锻炼、营养和休息，我们可以支持肌原纤维的维护和发展，确保我们的肌肉在整个生命过程中保持强壮和功能。随着我们对这些迷人结构的了解不断深入，我们可以更好地欣赏我们身体的复杂性以及照顾我们肌肉系统的重要性。