capillary network

简明释义

毛细管网络

英英释义

例句

1.The capillary network 毛细血管网络 plays a crucial role in thermoregulation in mammals.

在哺乳动物中，毛细血管网络在温度调节中起着至关重要的作用。

2.Damage to the capillary network 毛细血管网络 can lead to severe health issues.

对毛细血管网络的损伤可能导致严重的健康问题。

3.In plants, the capillary network 毛细血管网络 helps in the distribution of water and nutrients.

在植物中，毛细血管网络帮助分配水分和养分。

4.The human body relies on a complex capillary network 毛细血管网络 to deliver oxygen to tissues.

人体依赖复杂的毛细血管网络来将氧气输送到组织。

5.Researchers are studying the capillary network 毛细血管网络 in tumors to understand their growth patterns.

研究人员正在研究肿瘤中的毛细血管网络以了解其生长模式。

作文

The human body is an intricate system that relies on various structures to function effectively. One of the most fascinating components of this system is the capillary network, which plays a crucial role in the circulatory system. The capillary network refers to the vast array of tiny blood vessels known as capillaries that connect arteries and veins. These capillaries are essential for the exchange of oxygen, nutrients, and waste products between the blood and tissues. Understanding the structure and function of the capillary network is vital for appreciating how our bodies maintain homeostasis. Capillaries are incredibly thin, with walls that are only one cell thick, allowing for efficient diffusion of substances. This unique structure enables oxygen to pass from the blood into the surrounding tissues while simultaneously allowing carbon dioxide and other waste products to enter the bloodstream for removal. The capillary network is not uniform throughout the body; it varies in density depending on the metabolic activity of different tissues. For instance, muscles and organs such as the liver and kidneys have a rich supply of capillaries, reflecting their high demand for oxygen and nutrients. In contrast, areas with lower metabolic needs, like cartilage, have fewer capillaries. This variation is a testament to the body's ability to adapt its blood supply according to the needs of each tissue. Moreover, the capillary network is also involved in thermoregulation. When the body needs to lose heat, the capillaries near the skin's surface dilate, increasing blood flow and allowing heat to escape. Conversely, when the body needs to conserve heat, these capillaries constrict, reducing blood flow to the skin. This dynamic control is essential for maintaining an optimal body temperature, especially in varying environmental conditions. In addition to their role in nutrient and gas exchange, the capillary network is also crucial in the immune response. White blood cells can move through the capillary walls to reach sites of infection or injury quickly. This ability to transport immune cells efficiently is vital for the body's defense mechanisms, ensuring that pathogens are addressed promptly. Diseases affecting the capillary network can lead to significant health issues. Conditions such as diabetes can damage capillaries, leading to complications like poor wound healing and neuropathy. Understanding the importance of this network highlights the need for maintaining vascular health through a balanced diet, regular exercise, and avoiding smoking. In conclusion, the capillary network is a remarkable feature of the circulatory system that facilitates essential processes such as nutrient exchange, thermoregulation, and immune response. Its intricate design and function underscore the complexity of the human body. By appreciating the significance of the capillary network, we gain insight into the delicate balance that sustains life and the importance of taking care of our vascular health.

人体是一个复杂的系统，依赖于各种结构有效地运作。其中一个最引人入胜的组成部分是毛细血管网络，它在循环系统中扮演着至关重要的角色。毛细血管网络是指连接动脉和静脉的无数微小血管，称为毛细血管。这些毛细血管对于氧气、营养物质和废物在血液与组织之间的交换至关重要。理解毛细血管网络的结构和功能对于欣赏我们身体如何维持内稳态是非常重要的。毛细血管极其细薄，壁厚仅为一层细胞，允许物质高效扩散。这种独特的结构使氧气能够从血液中进入周围组织，同时允许二氧化碳和其他废物进入血液中以便排除。毛细血管网络在全身并不均匀；根据不同组织的代谢活动，其密度各不相同。例如，肌肉和肝脏、肾脏等器官的毛细血管供应丰富，反映出它们对氧气和营养物质的高需求。相反，像软骨这样的低代谢需求区域则有较少的毛细血管。这种变化是身体根据每个组织的需求调整血液供应能力的证明。此外，毛细血管网络还参与体温调节。当身体需要散热时，靠近皮肤表面的毛细血管扩张，增加血流量，从而使热量得以散发。相反，当身体需要保持热量时，这些毛细血管收缩，减少流向皮肤的血流。这种动态控制对于维持最佳体温至关重要，尤其是在不同的环境条件下。除了在营养和气体交换中的作用外，毛细血管网络在免疫反应中也至关重要。白细胞可以通过毛细血管壁迅速移动到感染或受伤的部位。这种高效运输免疫细胞的能力对于身体的防御机制至关重要，确保病原体得到及时处理。影响毛细血管网络的疾病可能导致严重的健康问题。例如，糖尿病可能损害毛细血管，导致如伤口愈合不良和神经病变等并发症。理解这一网络的重要性突显了通过均衡饮食、定期锻炼和避免吸烟来维持血管健康的必要性。总之，毛细血管网络是循环系统中一个非凡的特征，促进了营养交换、体温调节和免疫反应等基本过程。它的复杂设计和功能凸显了人体的复杂性。通过欣赏毛细血管网络的重要性，我们深入了解维持生命所需的微妙平衡，以及照顾我们血管健康的重要性。