lower limb

简明释义

下边缘下缘

英英释义

例句

1.He felt a sharp pain in his lower limb while running.

他在跑步时感到下肢有剧烈的疼痛。

2.Injuries to the lower limb are common in athletes.

运动员常见的伤害是对下肢的损伤。

3.Physical therapy can help improve the strength of the lower limb after surgery.

物理治疗可以帮助在手术后增强下肢的力量。

4.The doctor examined the patient's lower limb for any signs of injury.

医生检查了病人的下肢是否有受伤的迹象。

5.The rehabilitation program focuses on strengthening the lower limb muscles.

康复计划专注于增强下肢肌肉。

作文

The human body is a marvel of biological engineering, and one of its most crucial components is the lower limb. The term lower limb refers to the part of the body that includes the thighs, knees, calves, ankles, and feet. It plays an essential role in our ability to move, maintain balance, and perform various activities such as walking, running, and jumping. Understanding the anatomy and function of the lower limb is vital for fields like medicine, sports, and rehabilitation.The lower limb consists of several key bones, including the femur, tibia, and fibula. The femur, or thigh bone, is the longest bone in the human body and connects the hip joint to the knee joint. It supports a significant amount of weight and is crucial for mobility. The tibia, known as the shinbone, is located on the inner side of the leg and bears most of the body’s weight during standing and walking. The fibula runs alongside the tibia and provides stability to the ankle joint.In addition to bones, the lower limb contains numerous muscles that enable movement. Major muscle groups include the quadriceps, hamstrings, and calf muscles. The quadriceps, located at the front of the thigh, are responsible for extending the knee, while the hamstrings, found at the back of the thigh, allow for knee flexion. The calf muscles, which comprise the gastrocnemius and soleus, are crucial for movements such as walking on tiptoes and pushing off the ground when running.The joints in the lower limb also play a critical role in movement. The hip joint is a ball-and-socket joint that allows for a wide range of motion, making it possible to perform activities such as squatting and climbing stairs. The knee joint, a hinge joint, enables bending and straightening of the leg, while the ankle joint allows for foot movement in multiple directions. Together, these joints provide the necessary flexibility and support for various physical activities.In terms of functionality, the lower limb is vital for locomotion. Walking is a complex process that involves coordination between the brain, muscles, and joints. Each step requires the activation of different muscle groups to propel the body forward. Any injury or condition affecting the lower limb, such as fractures, sprains, or arthritis, can severely impact a person’s mobility and quality of life.Moreover, the lower limb is not only important for movement but also for maintaining balance. The feet play a significant role in proprioception, which is the body’s ability to sense its position in space. This sensory feedback is crucial for preventing falls and injuries, especially in older adults.In conclusion, the lower limb is an integral part of the human body that facilitates movement, balance, and overall functionality. Its complex structure, comprising bones, muscles, and joints, allows us to perform a wide range of activities. Understanding the importance of the lower limb can help individuals appreciate their body’s capabilities and the significance of maintaining physical health through exercise and injury prevention. As we continue to advance in medical science, the knowledge of how to care for and rehabilitate the lower limb will remain a crucial aspect of healthcare and wellness.

人体是生物工程的奇迹，其中一个最重要的组成部分就是下肢。术语下肢指的是身体的部分，包括大腿、膝盖、小腿、脚踝和脚。它在我们的移动、保持平衡以及进行各种活动（如走路、跑步和跳跃）中起着至关重要的作用。理解下肢的解剖结构和功能对于医学、体育和康复等领域至关重要。下肢由几根主要骨骼组成，包括股骨、胫骨和腓骨。股骨，或称大腿骨，是人体最长的骨头，连接髋关节和膝关节。它承受着大量的体重，对于移动至关重要。胫骨，亦称为小腿骨，位于腿的内侧，在站立和行走时承受着大部分的体重。腓骨则与胫骨并行，提供踝关节的稳定性。除了骨骼，下肢还包含许多肌肉，使得运动成为可能。主要肌肉群包括股四头肌、腘绳肌和小腿肌肉。位于大腿前部的股四头肌负责伸展膝盖，而位于大腿后部的腘绳肌则使膝盖弯曲。小腿肌肉，包括腓肠肌和比目鱼肌，对于如在脚尖上行走和在奔跑时推离地面等动作至关重要。下肢中的关节也在运动中发挥着关键作用。髋关节是一个球窝关节，允许广泛的运动范围，使得如下蹲和爬楼梯等活动成为可能。膝关节是一个铰链关节，允许腿的弯曲和伸展，而踝关节则允许脚在多个方向上的运动。这些关节共同提供了进行各种身体活动所需的灵活性和支持。在功能方面，下肢对运动至关重要。走路是一个复杂的过程，涉及大脑、肌肉和关节之间的协调。每一步都需要激活不同的肌肉群以推动身体前进。任何影响下肢的伤害或疾病，如骨折、扭伤或关节炎，都可能严重影响一个人的移动能力和生活质量。此外，下肢不仅对运动重要，还对保持平衡至关重要。脚在本体感觉中发挥着重要作用，本体感觉是指身体感知其在空间中的位置的能力。这种感觉反馈对于预防跌倒和受伤至关重要，尤其是在老年人中。总之，下肢是人体的重要组成部分，促进运动、平衡和整体功能。它复杂的结构，包括骨骼、肌肉和关节，使我们能够执行各种活动。理解下肢的重要性可以帮助人们欣赏自己身体的能力，以及通过锻炼和预防受伤来维持身体健康的重要性。随着医学科学的不断进步，如何护理和康复下肢的知识将始终是医疗保健和健康的重要方面。