sarcolemma

简明释义

英[ˈsɑːkəʊˌlemə]美[ˌsɑrkəˈlemə]

n. 肌纤维膜；肌膜

英英释义

单词用法

同义词

反义词

例句

1.After resection of common peroneal nerve, the distal peroneus longus muscle was broken and sarcolemma was resected, and then gastrocnemius muscle of the same side was implanted.

各组在切除腓总神经后，将腓骨长肌远端切断并切除肌膜后植入同侧腓肠肌。

2.After resection of common peroneal nerve, the distal peroneus longus muscle was broken and sarcolemma was resected, and then gastrocnemius muscle of the same side was implanted.

各组在切除腓总神经后，将腓骨长肌远端切断并切除肌膜后植入同侧腓肠肌。

3.Skeletal muscle satellite cells are quiescent mononucleated myogenic cells, located between the sarcolemma and basement membrane of terminally-differentiated muscle fibres.

骨骼肌卫星细胞是骨骼肌中位于肌细胞膜和基膜之间的具有增殖分化潜力的肌源性细胞。

4.It is well established that the cardiac contraction is initiated when an action potential depolarizes the sarcolemma.

已经确证，心肌收缩始于动作电位使肌膜去极化。

5.It is well established that the cardial contraction is initiated when an action potential depolarizes the sarcolemma.

已经确证，心肌收缩始于动作电位使肌膜去极化。

6.The sarcolemma plays a crucial role in muscle contraction by transmitting the action potential.

在肌肉收缩中，sarcolemma通过传递动作电位发挥关键作用。

7.Damage to the sarcolemma can lead to muscle degeneration and weakness.

对sarcolemma的损伤可能导致肌肉退化和无力。

8.During exercise, the permeability of the sarcolemma increases to allow more calcium ions to enter the muscle cell.

在锻炼期间，sarcolemma的通透性增加，以允许更多钙离子进入肌肉细胞。

9.The sarcolemma is essential for maintaining the electrochemical gradient necessary for muscle function.

sarcolemma对于维持肌肉功能所需的电化学梯度至关重要。

10.Researchers study the sarcolemma to understand how muscle cells respond to different stimuli.

研究人员研究sarcolemma以了解肌肉细胞如何对不同刺激作出反应。

作文

The human body is a marvel of biological engineering, with various systems working in harmony to maintain life. Among these systems, the muscular system plays a crucial role in movement and stability. At the cellular level, muscle fibers are the fundamental units that enable contraction and relaxation. One of the key components of these muscle fibers is the sacrolemma, which is the cell membrane surrounding each muscle fiber. Understanding the structure and function of the sacrolemma is essential for comprehending how muscles operate and respond to stimuli. The sacrolemma serves as a barrier between the internal environment of the muscle fiber and the external environment. It is composed of a lipid bilayer that is embedded with proteins, which serve various functions such as signaling and transport. This membrane is not just a passive structure; it plays an active role in the excitation-contraction coupling process, which is critical for muscle contraction. When a muscle is stimulated by a nerve impulse, the sacrolemma depolarizes, allowing ions to flow in and out of the cell. This change in ion concentration triggers a cascade of events that ultimately leads to muscle contraction. Moreover, the sacrolemma contains specialized structures known as T-tubules, which penetrate deep into the muscle fiber. These T-tubules facilitate the rapid transmission of electrical signals throughout the muscle, ensuring that contractions occur in a coordinated manner. This is particularly important in larger muscles where simultaneous contraction of all fibers is necessary for effective movement. In addition to its role in muscle contraction, the sacrolemma also plays a vital part in muscle repair and regeneration. When muscle fibers are damaged due to injury or exercise, the sacrolemma helps to maintain the integrity of the muscle cell and initiates the repair process. Satellite cells, which are a type of stem cell found in skeletal muscle, rely on the sacrolemma to fuse with damaged fibers and contribute to muscle growth and repair. Understanding the sacrolemma is not only important for biology students but also for athletes and fitness enthusiasts. Knowledge of how the sacrolemma functions can help individuals optimize their training regimens and recovery strategies. For instance, understanding the importance of proper nutrition and hydration can aid in maintaining the health of the sacrolemma, thereby enhancing performance and reducing the risk of injury. In conclusion, the sacrolemma is a vital component of muscle fibers that plays a significant role in muscle function, repair, and overall health. Its unique structure and functions make it an essential topic of study in both physiology and sports science. By gaining a deeper understanding of the sacrolemma, we can appreciate the intricate mechanics of our bodies and the importance of maintaining healthy muscle tissue. As research continues to advance, further insights into the sacrolemma may lead to new strategies for treating muscle-related injuries and conditions, ultimately improving the quality of life for many individuals.

人体是生物工程的奇迹，各种系统和谐地协同工作以维持生命。在这些系统中，肌肉系统在运动和稳定性方面发挥着至关重要的作用。在细胞层面，肌肉纤维是使收缩和放松成为可能的基本单位。这些肌肉纤维的关键组成部分之一是sacrolemma，它是包围每个肌肉纤维的细胞膜。理解sacrolemma的结构和功能对于理解肌肉如何运作和对刺激作出反应至关重要。 sacrolemma作为肌肉纤维内部环境与外部环境之间的屏障。它由嵌入多种蛋白质的脂质双层构成，这些蛋白质具有信号传递和运输等多种功能。这个膜不仅仅是一个被动结构；它在兴奋-收缩耦合过程中发挥着积极的作用，这对肌肉收缩至关重要。当肌肉受到神经冲动的刺激时，sacrolemma去极化，允许离子进出细胞。这种离子浓度的变化触发了一系列事件，最终导致肌肉收缩。 此外，sacrolemma还包含称为T管的特化结构，它深入肌肉纤维内部。这些T管促进电信号在整个肌肉中的快速传播，确保收缩以协调的方式发生。这在较大的肌肉中尤为重要，因为所有纤维的同时收缩对于有效运动是必要的。 除了在肌肉收缩中的作用，sacrolemma在肌肉修复和再生中也起着至关重要的作用。当由于受伤或锻炼而损伤肌肉纤维时，sacrolemma有助于维持肌肉细胞的完整性并启动修复过程。卫星细胞是一种存在于骨骼肌中的干细胞类型，依赖于sacrolemma与受损纤维融合，并促进肌肉的生长和修复。 了解sacrolemma不仅对生物学学生重要，对运动员和健身爱好者也至关重要。了解sacrolemma的功能可以帮助个人优化他们的训练方案和恢复策略。例如，理解适当营养和水分摄入的重要性可以帮助维持sacrolemma的健康，从而提高表现并减少受伤风险。 总之，sacrolemma是肌肉纤维的重要组成部分，在肌肉功能、修复和整体健康中发挥着重要作用。其独特的结构和功能使其成为生理学和运动科学研究的核心主题。通过深入了解sacrolemma，我们可以欣赏身体的复杂机制以及维持健康肌肉组织的重要性。随着研究的不断进展，对sacrolemma的进一步见解可能会导致治疗与肌肉相关的损伤和疾病的新策略，最终改善许多人的生活质量。