vein wall

简明释义

脉壁

英英释义

例句

1.Research shows that exercise can strengthen the vein wall 静脉壁 and improve circulation.

研究表明，锻炼可以增强静脉壁 vein wall 并改善血液循环。

2.The surgeon noted that the vein wall 静脉壁 was inflamed during the procedure.

外科医生在手术过程中注意到静脉壁 vein wall 发炎。

3.The doctor explained that the thickness of the vein wall 静脉壁 can indicate potential health issues.

医生解释说，静脉壁 vein wall 的厚度可能表明潜在的健康问题。

4.During the ultrasound, we observed the condition of the vein wall 静脉壁 to check for any abnormalities.

在超声检查中，我们观察了静脉壁 vein wall 的状况，以检查是否有任何异常。

5.A weakened vein wall 静脉壁 can lead to varicose veins over time.

随着时间的推移，弱化的静脉壁 vein wall 可能导致静脉曲张。

作文

The human body is a complex network of systems that work together to maintain life. Among these systems, the circulatory system plays a crucial role in transporting blood throughout the body. Within this system, the veins are essential components that help return deoxygenated blood back to the heart. One important aspect of veins that often goes unnoticed is their structure, particularly the vein wall (静脉壁). The vein wall consists of three layers: the tunica intima, tunica media, and tunica externa. Each of these layers serves a specific function that contributes to the overall effectiveness of the circulatory system.The innermost layer, the tunica intima, is made up of endothelial cells that provide a smooth surface for blood flow. This smoothness is vital because it reduces friction, allowing blood to flow easily through the veins. The health of the vein wall is critical; any damage or disease affecting the tunica intima can lead to serious conditions such as thrombosis or varicose veins. These conditions occur when blood flow is obstructed or when the valves within the veins fail to function properly, leading to increased pressure and swelling.The middle layer, known as the tunica media, is composed of smooth muscle and elastic fibers. This layer is responsible for the flexibility and strength of the vein wall. Unlike arteries, which have thick walls to withstand high pressure from the heart's pumping action, veins operate under lower pressure. The tunica media allows veins to expand and contract as needed, accommodating varying volumes of blood. This ability is particularly important during physical activity when blood flow increases to meet the body's demands.Finally, the outer layer, the tunica externa, is made of connective tissue that provides additional support and structure to the vein wall. This layer anchors the veins to surrounding tissues and helps protect them from injury. It also contains small blood vessels, known as vasa vasorum, that supply nutrients to the larger veins themselves. The integrity of the vein wall is vital for maintaining healthy circulation, and any compromise in its structure can lead to significant health issues.In conclusion, the vein wall (静脉壁) is a critical component of the circulatory system, consisting of three layers that each play a unique role in ensuring proper blood flow. Understanding the structure and function of the vein wall helps us appreciate the complexity of our bodies and the importance of maintaining vascular health. Regular exercise, a balanced diet, and avoiding prolonged periods of inactivity can all contribute to the health of our veins. By taking care of our circulatory system, we can promote overall well-being and prevent potential complications related to venous health.

人类身体是一个复杂的系统网络，这些系统共同作用以维持生命。在这些系统中，循环系统发挥着至关重要的作用，负责将血液运输到全身。在这个系统中，静脉是帮助将缺氧血液返回心脏的重要组成部分。一个常常被忽视的重要方面是静脉的结构，特别是静脉壁。静脉壁由三层组成：内膜、平滑肌层和外膜。这些层各自发挥着特定的功能，为循环系统的整体有效性做出贡献。最内层，即内膜，由内皮细胞构成，提供了一个光滑的血流表面。这种光滑性至关重要，因为它减少了摩擦，使血液能够轻松流经静脉。静脉壁的健康至关重要；任何影响内膜的损伤或疾病都可能导致严重的疾病，如血栓形成或静脉曲张。这些情况发生在血流受阻或静脉内的瓣膜未能正常工作时，导致压力增加和肿胀。中间层称为平滑肌层，由平滑肌和弹性纤维构成。此层负责静脉壁的灵活性和强度。与动脉不同，动脉具有厚厚的壁以承受来自心脏泵动的高压，而静脉则在较低的压力下运作。平滑肌层使静脉能够根据需要扩展和收缩，以适应不同的血液量。这种能力在体育活动期间尤为重要，因为血流会增加以满足身体的需求。最后，外层称为外膜，由结缔组织构成，为静脉壁提供额外的支持和结构。这一层将静脉固定到周围组织，并帮助保护它们免受伤害。它还包含小血管，即血管的血管，提供营养给更大的静脉本身。静脉壁的完整性对维持健康的循环至关重要，任何其结构的妥协都可能导致显著的健康问题。总之，静脉壁是循环系统的关键组成部分，由三层组成，每一层在确保正常血流方面都发挥着独特的作用。理解静脉壁的结构和功能有助于我们欣赏身体的复杂性以及维持血管健康的重要性。定期锻炼、均衡饮食以及避免长时间不活动都可以促进静脉的健康。通过照顾我们的循环系统，我们可以促进整体健康并预防与静脉健康相关的潜在并发症。