knuckle joint

简明释义

叉形接头

英英释义

例句

1.She wore a ring on her knuckle joint 指关节 to show off her unique style.

她在自己的knuckle joint 指关节上戴着一枚戒指，以展示她独特的风格。

2.The doctor examined her knuckle joint 指关节 for signs of arthritis.

医生检查了她的knuckle joint 指关节是否有关节炎的迹象。

3.He cracked his fingers, making a popping sound in his knuckle joint 指关节.

他扭动手指，导致他的knuckle joint 指关节发出咔嚓声。

4.He accidentally hit his hand on the table, and now his knuckle joint 指关节 is swollen.

他不小心把手撞在桌子上，现在他的knuckle joint 指关节肿了。

5.In martial arts, proper alignment of the knuckle joint 指关节 is crucial for effective strikes.

在武术中，knuckle joint 指关节的正确对齐对有效打击至关重要。

作文

The human body is a marvel of engineering, with each part working in harmony to allow for movement and function. One of the most fascinating components of our anatomy is the joint, specifically the knuckle joint, which plays a crucial role in our ability to grasp and manipulate objects. Understanding the structure and function of the knuckle joint can provide insights into both human biology and the mechanics of movement.The knuckle joint, known scientifically as the metacarpophalangeal joint, is located where the fingers meet the hand. This joint is formed by the connection of the metacarpal bones in the hand and the proximal phalanges of the fingers. Each finger has its own knuckle joint, allowing for a wide range of motion. The knuckle joint is classified as a synovial joint, which means it is surrounded by a capsule filled with synovial fluid that lubricates the joint and reduces friction during movement.One of the primary functions of the knuckle joint is to facilitate gripping and holding objects. When we make a fist or grasp an item, the knuckle joint allows the fingers to bend and flex, providing the necessary strength and dexterity. This ability is vital for many daily activities, such as writing, typing, and even playing musical instruments. Without the proper functioning of the knuckle joint, these tasks would become significantly more challenging.In addition to their functional importance, knuckle joints are also susceptible to various injuries and conditions. Common issues include arthritis, which can lead to pain and stiffness, and dislocations, which can occur from trauma or excessive force. Understanding these potential problems emphasizes the importance of caring for our joints through proper exercise and ergonomics. Strengthening the muscles around the knuckle joint can help maintain its health and functionality.Interestingly, the knuckle joint also has cultural significance in various contexts. For example, the act of cracking one's knuckles is a common habit among many individuals. While some believe this habit can lead to arthritis, research has shown that it does not cause harm to the joint. Instead, the sound produced during knuckle cracking is due to the rapid release of gas bubbles in the synovial fluid. This phenomenon highlights the unique characteristics of the knuckle joint and how it functions within the human body.In conclusion, the knuckle joint is an essential component of our skeletal system, enabling us to perform a myriad of tasks with our hands. Its complex structure allows for flexibility and strength, making it vital for everyday activities. By understanding the knuckle joint and its functions, we can appreciate the intricacies of our bodies and the importance of maintaining joint health. Whether through exercise, proper posture, or awareness of injuries, taking care of our knuckle joints will ensure that we continue to enjoy the full range of motion and capabilities that our hands provide us with throughout our lives.

人体是一个工程奇迹，每个部分和谐地运作，以实现运动和功能。我们解剖学中最迷人的组成部分之一是关节，特别是指关节，它在我们抓握和操控物体的能力中扮演着至关重要的角色。理解指关节的结构和功能可以提供对人类生物学和运动力学的深入见解。指关节，在科学上被称为掌指关节，位于手指与手相接的地方。这个关节是由手中的掌骨和手指的近节指骨连接而成。每个手指都有自己的指关节，允许进行广泛的运动。指关节被归类为滑膜关节，这意味着它被充满滑液的囊包围，这种滑液在运动过程中润滑关节并减少摩擦。指关节的主要功能之一是促进抓握和持物。当我们握拳或抓住物体时，指关节使手指能够弯曲和屈伸，提供必要的力量和灵活性。这种能力对于许多日常活动至关重要，例如写字、打字甚至演奏乐器。如果指关节的正常功能受到影响，这些任务将变得极其困难。除了功能重要性外，指关节也容易受到各种伤害和疾病的影响。常见的问题包括关节炎，这可能导致疼痛和僵硬，以及脱臼，这可能因创伤或过大的力量而发生。了解这些潜在问题强调了通过适当的锻炼和人机工程学来保护我们关节的重要性。增强指关节周围肌肉的力量有助于保持其健康和功能。有趣的是，指关节在各种文化背景中也具有重要意义。例如，弹指关节是许多人常见的习惯。虽然有些人认为这一习惯可能导致关节炎，但研究表明，它并不会对关节造成伤害。相反，弹指时产生的声音是由于滑液中气泡的快速释放。这一现象突显了指关节的独特特性，以及它在人体内的功能。总之，指关节是我们骨骼系统中的一个重要组成部分，使我们能够用手执行无数任务。其复杂的结构允许灵活性和力量，使其对日常活动至关重要。通过理解指关节及其功能，我们可以欣赏我们身体的复杂性以及维护关节健康的重要性。无论是通过锻炼、正确的姿势，还是对伤害的意识，照顾我们的指关节将确保我们继续享受手所提供的全方位运动能力和功能。