contractile

简明释义

英[kənˈtræktaɪl]美[kənˈtræktaɪl]

adj. 可收缩的，有收缩性的

英英释义

单词用法

同义词

反义词

例句

1.Actin a globular contractile protein that makes up 10-15% of the total cell protein in eukaryotic cells. It is a major component of the CYTOSKELETON.

一种球状收缩蛋白它约占真核细胞总蛋白含量的10%- 15%，是细胞骨架的主要组分。

2.The biological significance of the cessation of spontaneous contractile activity is discussed.

讨论了自发性收缩两度出现及停止的生物学意义。

3.Methods Fluorescence staining and confocal microscopy were used to study the distribution of contractile proteins in LAM cell.

方法用荧光抗体染色法和激光共焦显微镜观察收缩蛋白在L AM细胞的分布。

4.Our results indicate that cardiac stem cells can markedly improve the contractile function of the heart.

我们的研究结果表明，心脏干细胞可以显着改善心脏的收缩功能。

5.The heart is a highly contractile organ.

心脏是具有高度收缩性的器官。

6.In endothelium-denuded aorta rings, melittin did not have the effect on the contractile responses induced by PHE.

蜂毒肽对去内皮主动脉环由苯肾上腺素引起的收缩无作用；

7.The pigmented, round, contractile membrane of the eye, suspended between the.

虹膜眼睛中一层带色素的，球形的可伸缩的薄膜，处于。

8.During wound healing, dermal fibroblasts switch from a migratory, repopulating phenotype a contractile, matrix - reassembling phenotype.

在创伤愈合过程中，真皮成纤维细胞从迁移、再生表型转变为可收缩、基质聚集表型。

9.Researchers are studying the contractile properties of smooth muscle in the digestive system.

研究人员正在研究消化系统中平滑肌的收缩性特性。

10.The contractile mechanism of the cell is essential for movement and shape maintenance.

细胞的收缩性机制对于运动和形状维持至关重要。

11.In response to stimuli, the contractile fibers in skeletal muscles shorten.

在刺激的作用下，骨骼肌中的收缩性纤维会缩短。

12.The heart muscle has a strong contractile ability, allowing it to pump blood efficiently.

心肌具有强大的收缩性，使其能够有效地泵血。

13.During exercise, the contractile units of muscle fibers work harder to generate force.

在锻炼期间，肌肉纤维的收缩性单元会更加努力地工作以产生力量。

作文

The human body is a complex system composed of various types of tissues, each playing a vital role in maintaining overall health and functionality. Among these tissues, muscle tissue stands out due to its unique ability to generate force and facilitate movement. One of the most fascinating aspects of muscle tissue is its contractile (收缩的) nature, which allows muscles to shorten and produce movement through contraction. This process is essential not only for voluntary movements, such as walking or lifting objects, but also for involuntary functions, like the beating of the heart and the movement of food through the digestive tract.Muscle tissue can be classified into three main types: skeletal, cardiac, and smooth muscles. Skeletal muscles, which are attached to bones, are responsible for voluntary movements. They are characterized by their striated appearance and are controlled by the somatic nervous system. The contractile (收缩的) fibers in skeletal muscles allow them to contract rapidly and with great force, making them ideal for activities that require strength and speed.Cardiac muscle, found only in the heart, has a unique structure that enables it to function continuously without fatigue. This type of muscle is also contractile (收缩的), but it operates involuntarily, meaning it functions without conscious control. The rhythmic contractions of cardiac muscle are vital for pumping blood throughout the body, ensuring that oxygen and nutrients are delivered to tissues while waste products are removed.Smooth muscle, located in the walls of hollow organs such as the intestines and blood vessels, is another example of contractile (收缩的) tissue. Unlike skeletal muscle, smooth muscle is not striated and operates involuntarily. The contractile (收缩的) nature of smooth muscle allows it to perform essential functions, such as regulating blood flow and facilitating digestion by moving food through the gastrointestinal tract.The contractile (收缩的) mechanism in muscles is primarily driven by the interaction between two proteins: actin and myosin. These proteins work together in a process known as the sliding filament theory, where myosin filaments pull on actin filaments, causing the muscle to shorten and generate force. This intricate process is regulated by calcium ions and energy in the form of ATP, highlighting the importance of cellular metabolism in muscle function.In addition to their role in movement, contractile (收缩的) tissues are also involved in various physiological processes that are crucial for survival. For instance, the contraction of smooth muscle in blood vessels helps regulate blood pressure, while the contractile (收缩的) activity of the diaphragm and intercostal muscles is essential for breathing.Understanding the contractile (收缩的) properties of muscle tissue is vital for fields such as medicine, sports science, and rehabilitation. Researchers continue to study muscle physiology to develop better treatments for muscular diseases and improve athletic performance. By exploring the mechanisms behind muscle contraction, scientists aim to unlock new avenues for enhancing strength, endurance, and overall physical health.In conclusion, the contractile (收缩的) nature of muscle tissue is fundamental to the functioning of the human body. From enabling movement to supporting vital physiological processes, muscles play an indispensable role in our daily lives. As we deepen our understanding of muscle physiology, we can appreciate the remarkable complexity and efficiency of this essential biological system.

人体是由多种类型的组织构成的复杂系统，每种组织在维持整体健康和功能方面都发挥着重要作用。在这些组织中，肌肉组织因其独特的产生力量和促进运动的能力而脱颖而出。肌肉组织最迷人的方面之一是其contractile（收缩的）特性，这使得肌肉能够通过收缩来缩短并产生运动。这个过程不仅对自愿运动至关重要，例如走路或举起物体，而且对非自愿功能也至关重要，比如心脏的跳动和食物在消化道中的移动。肌肉组织可以分为三种主要类型：骨骼肌、心肌和平滑肌。骨骼肌附着于骨骼，负责自愿运动。它们的特征是有条纹的外观，并由躯体神经系统控制。骨骼肌中的contractile（收缩的）纤维使它们能够快速且强有力地收缩，使其理想于需要力量和速度的活动。心肌仅存在于心脏中，具有独特的结构，使其能够不疲劳地持续运作。这种类型的肌肉也是contractile（收缩的），但它是无意识操作的，意味着它在没有意识控制的情况下运作。心肌的节律性收缩对将血液泵送到全身至关重要，确保氧气和营养物质被输送到组织，同时废物被清除。平滑肌位于空心器官的壁内，如肠道和血管，也是contractile（收缩的）组织的另一个例子。与骨骼肌不同，平滑肌没有条纹，并且是无意识的。平滑肌的contractile（收缩的）特性使其能够执行基本功能，例如调节血流和通过胃肠道推动食物。肌肉中的contractile（收缩的）机制主要由两种蛋白质驱动：肌动蛋白和肌球蛋白。这些蛋白质通过一种称为滑动丝理论的过程协同工作，其中肌球蛋白丝拉动肌动蛋白丝，导致肌肉缩短并产生力量。这个复杂的过程受到钙离子和ATP形式的能量的调控，突显了细胞代谢在肌肉功能中的重要性。除了在运动中的作用外，contractile（收缩的）组织还参与各种生理过程，这些过程对生存至关重要。例如，血管中平滑肌的收缩有助于调节血压，而膈肌和肋间肌的contractile（收缩的）活动对呼吸至关重要。理解肌肉组织的contractile（收缩的）特性对于医学、运动科学和康复等领域至关重要。研究人员继续研究肌肉生理学，以开发更好的肌肉疾病治疗方法并改善运动表现。通过探索肌肉收缩背后的机制，科学家旨在开启增强力量、耐力和整体身体健康的新途径。总之，肌肉组织的contractile（收缩的）特性对人体的功能至关重要。从使运动成为可能到支持重要的生理过程，肌肉在我们的日常生活中扮演着不可或缺的角色。随着我们对肌肉生理学理解的加深，我们可以欣赏这个基本生物系统的非凡复杂性和效率。