knuckle joint

简明释义

肘接

英英释义

例句

1.The flexibility of the knuckle joint (指关节) allows for a wide range of hand movements.

knuckle joint（指关节）的灵活性允许手部进行广泛的运动。

2.When you make a fist, the bending of your fingers occurs at the knuckle joint (指关节).

当你握拳时，手指的弯曲发生在knuckle joint（指关节）处。

3.A common injury in sports is a sprain of the knuckle joint (指关节).

运动中常见的伤害是knuckle joint（指关节）的扭伤。

4.The doctor examined my hand and said I had inflammation in the knuckle joint (指关节).

医生检查了我的手，说我在knuckle joint（指关节）处有炎症。

5.In martial arts, training often focuses on strengthening the muscles around the knuckle joint (指关节) for better impact.

在武术中，训练通常侧重于增强knuckle joint（指关节）周围肌肉的力量，以提高冲击力。

作文

The human body is a marvel of engineering, composed of various intricate parts that work together seamlessly. One of the most fascinating components of our anatomy is the joint, particularly the knuckle joint (指关节). These joints play a crucial role in our daily movements, allowing us to grip, hold, and manipulate objects with precision. Understanding the structure and function of the knuckle joint is essential for appreciating how we perform even the simplest tasks.The knuckle joint is formed where two bones meet, typically at the base of the fingers. Each knuckle joint consists of several key elements: the bones, cartilage, synovial fluid, and ligaments. The bones provide the framework, while the cartilage acts as a cushion, reducing friction and allowing for smooth movement. Synovial fluid, which is secreted by the synovial membrane, lubricates the joint, ensuring that it can move freely without pain. Ligaments connect the bones, providing stability and support during motion.When we think about the functionality of the knuckle joint, it becomes clear how vital it is to our everyday activities. For instance, when typing on a keyboard, writing with a pen, or even playing a musical instrument, our knuckle joints are constantly at work. They enable us to bend and straighten our fingers, facilitating a wide range of motions that are essential for fine motor skills.Moreover, the knuckle joint also plays a significant role in sports and physical activities. Athletes rely heavily on their hand strength and dexterity, which are largely dependent on the health and functionality of their knuckle joints. Whether it's throwing a ball, catching a pass, or performing a gymnastics routine, the ability to control finger movements is critical for success.However, like any part of the body, the knuckle joint can be susceptible to injuries and conditions. Common issues include arthritis, sprains, and fractures, which can lead to pain and reduced mobility. It is essential to take care of our joints by engaging in regular exercise, maintaining a healthy diet, and using proper techniques during physical activities to avoid strain.In conclusion, the knuckle joint (指关节) is an integral part of our skeletal system, enabling us to perform a multitude of tasks with our hands. From simple actions like grasping objects to complex movements required in sports and arts, these joints are essential for our functionality. By understanding the importance of the knuckle joint, we can better appreciate the incredible design of the human body and the need to maintain joint health throughout our lives.