tunica

简明释义

英[ˈtjuːnɪkə]美[ˈtʊnɪkə;ˈtjʊnɪkə]

n. [生物] 膜；被膜；[生物] 被囊

复 数 t u n i c a e

英英释义

单词用法

同义词

反义词

例句

1.The internal surfaces of prosthesis were smooth and glossy with white tunica mucosa covered.

管腔内表面光滑，表面有一层白色的黏膜覆盖。

2.Tunica adventitia: entirely made of connective tissue.

外膜：完全由结缔组织构成。

3.The methods were applied to study the face of tunica mucosa of the Trionyx sinensis.

该方法用于研究中华鳖消化道粘膜表面。

4.During atherogenesis, vascular smooth muscle cells proliferate, migrate from tunica intima to media and uptake lipid then become foam cells.

我们推测动脉粥样硬化形成过程中血管平滑肌细胞能量代谢发生了改变。

5.The microstructure component in tunica media of umbilical cord vein were measured by the computer image analysis system.

光镜观察后，用计算机图像分析系统测量其中膜显微结构成分的相对含量。

6.When the tunica albuginea tears, the blood that is normally confined to this space leaks out into other tissues.

当白膜撕裂时，原来填充在这些区域的血就泄露到其他组织里。

7.The tunica 层 of the kidney plays a crucial role in filtering blood.

肾脏的tunica 层在过滤血液中起着至关重要的作用。

8.During the surgery, the doctor explained the importance of the tunica 膜层 in maintaining blood pressure.

在手术过程中，医生解释了tunica 膜层在维持血压中的重要性。

9.Histologists study the tunica 膜层 of various tissues under a microscope.

组织学家在显微镜下研究各种组织的tunica 膜层。

10.In botany, the tunica 鞘 refers to the protective layer surrounding certain plant structures.

在植物学中，tunica 鞘指的是包围某些植物结构的保护层。

11.The outer layer of the blood vessel is known as the tunica 膜层.

血管的外层被称为tunica 膜层。

作文

The term tunica refers to a layer or covering, often used in biological contexts to describe various types of tissues that serve as protective or supportive layers within organisms. In the field of anatomy, the tunica can refer to the different layers of blood vessels, such as the tunica intima, tunica media, and tunica externa. Each of these layers plays a critical role in the function of the blood vessels, contributing to their strength, elasticity, and ability to regulate blood flow. The tunica intima is the innermost layer, composed of endothelial cells that provide a smooth surface for blood to flow over, minimizing friction and preventing clotting. The tunica media, the middle layer, consists of smooth muscle and elastic fibers, allowing the blood vessels to contract and expand as needed. Finally, the tunica externa is the outer layer, made up of connective tissue that provides structural support and protection to the blood vessels.In botany, tunica can also refer to the protective layers surrounding plant organs, such as bulbs and seeds. For instance, the outer layer of an onion is known as the tunica, which protects the inner fleshy layers from damage and dehydration. This protective function is vital for the survival of the plant, as it helps to shield delicate tissues from environmental stressors.Understanding the concept of tunica is essential not only in biology but also in various medical fields. For example, when doctors perform surgeries on blood vessels or treat vascular diseases, they must have a comprehensive understanding of the structure and function of the tunica layers involved. Any damage to these layers can lead to serious complications, such as aneurysms or thrombosis, which can be life-threatening if not addressed promptly.Moreover, research into the tunica layers of blood vessels has significant implications for developing new treatments for cardiovascular diseases. Scientists are continually studying how these layers respond to different stimuli, such as high blood pressure or cholesterol levels, to understand better how to prevent and treat conditions like atherosclerosis. By targeting specific components of the tunica, researchers hope to create therapies that can strengthen these layers and improve overall vascular health.In summary, the term tunica encompasses a variety of meanings across different fields, primarily relating to protective layers in biological systems. Whether discussing the structure of blood vessels or the protective layers of plants, the concept of tunica highlights the importance of these coverings in maintaining the integrity and function of living organisms. As we continue to explore the complexities of biology and medicine, our understanding of the tunica will undoubtedly deepen, leading to improved health outcomes and advancements in scientific knowledge.

术语tunica指的是一层或覆盖物，通常用于生物学背景中，描述在生物体内作为保护或支持层的各种类型的组织。在解剖学领域，tunica可以指血管的不同层次，例如内膜层（tunica intima）、中膜层（tunica media）和外膜层（tunica externa）。这些层次在血管的功能中发挥着关键作用，有助于其强度、弹性以及调节血流的能力。内膜层是最内层，由内皮细胞组成，提供平滑的表面，让血液顺畅流动，减少摩擦并防止凝血。中膜层是中间层，由平滑肌和弹性纤维构成，使血管能够根据需要收缩和扩张。最后，外膜层是最外层，由结缔组织组成，为血管提供结构支持和保护。在植物学中，tunica也可以指包围植物器官的保护层，例如球茎和种子。例如，洋葱的外层被称为tunica，它保护内部肉质层免受损伤和脱水。这种保护功能对植物的生存至关重要，因为它有助于保护脆弱的组织免受环境压力。理解tunica的概念不仅在生物学中至关重要，在各个医学领域也是如此。例如，当医生对血管进行手术或治疗血管疾病时，他们必须全面了解涉及的tunica层的结构和功能。这些层的任何损伤都可能导致严重并发症，如动脉瘤或血栓形成，如果不及时处理，可能危及生命。此外，对血管tunica层的研究对开发心血管疾病的新治疗方法具有重要意义。科学家们不断研究这些层如何响应不同的刺激，例如高血压或胆固醇水平，以更好地理解如何预防和治疗动脉粥样硬化。通过针对tunica的特定成分，研究人员希望创造出能够增强这些层并改善整体血管健康的疗法。总之，术语tunica在不同领域涵盖了多种含义，主要与生物系统中的保护层有关。无论是讨论血管的结构还是植物的保护层，tunica的概念突显了这些覆盖物在维持生物体的完整性和功能中的重要性。随着我们继续探索生物学和医学的复杂性，我们对tunica的理解无疑会加深，从而改善健康结果并推动科学知识的进步。