tonicity

简明释义

英[təʊˈnɪsɪti]美[toʊˈnɪsəti]

n. 强壮；肌肉弹性；紧张性；调位强度

英英释义

单词用法

同义词

反义词

例句

1.It is generally believed that the medulla oblongata is the one of the tonicity sources of cardiovascular regulation.

延髓腹外侧区为心血管调节的紧张性冲动来源之一。

2.More muscular tonicity in together instigates your metabolism, you will be so more inclined to mobilize you in sustained efforts.

更多的肌肉方面的滋补会加速你的新陈代谢，你将会因此而更倾向于调动长期的毅力和不懈的努力。

3.More muscular tonicity in together instigates your metabolism, you will be so more inclined to mobilize you in sustained efforts.

更多的肌肉方面的滋补会加速你的新陈代谢，你将会因此而更倾向于调动长期的毅力和不懈的努力。

4.The nurse explained that the tonicity of the IV solution affects how fluids move in and out of cells.

护士解释说，IV溶液的张力会影响液体在细胞内外的流动。

5.In biology class, we learned about the tonicity of different solutions and their effects on plant cells.

在生物课上，我们学习了不同溶液的张力及其对植物细胞的影响。

6.Understanding the tonicity of a solution is crucial for effective medical treatments.

理解溶液的张力对于有效的医疗治疗至关重要。

7.A hypertonic solution has a higher tonicity than the cytoplasm of the cell, causing water to leave the cell.

高渗溶液的张力高于细胞的细胞质，导致水分离开细胞。

8.The tonicity of the saline solution was adjusted to match the patient's blood plasma.

生理盐水的张力被调整以匹配患者的血浆。

作文

The concept of tonicity is essential in various fields, particularly in biology and medicine. Tonicity refers to the ability of a solution to affect the volume of a cell through osmosis. In simpler terms, it describes how a solution can influence the movement of water across a cell membrane. Understanding tonicity is crucial for medical professionals, as it helps them determine how different intravenous solutions will impact patient cells. There are three primary types of tonicity: isotonic, hypertonic, and hypotonic. An isotonic solution has the same concentration of solutes as the cell's interior, resulting in no net movement of water. This is ideal for maintaining cell health, as it allows cells to retain their shape without swelling or shrinking. In contrast, a hypertonic solution has a higher concentration of solutes compared to the inside of the cell. When cells are placed in a hypertonic solution, water moves out of the cells in an attempt to balance the solute concentrations. This can lead to cell shrinkage and potentially severe consequences if not monitored carefully. For example, if a patient receives a hypertonic saline solution too quickly, it can cause their red blood cells to shrink, leading to complications such as hemolysis. On the other hand, a hypotonic solution has a lower concentration of solutes than the cell's interior. When cells are exposed to a hypotonic solution, water enters the cells, causing them to swell and possibly burst. This is particularly important in medical settings when considering the appropriate type of fluid for hydration. Administering a hypotonic solution to a dehydrated patient can be beneficial, but it must be done cautiously to avoid damaging the cells. The importance of tonicity extends beyond just medical applications. In plant biology, tonicity plays a vital role in maintaining turgor pressure, which is essential for plant rigidity and overall health. When plant cells are in a hypotonic environment, they swell and become turgid, providing structural support to the plant. Conversely, in hypertonic conditions, plant cells lose water, leading to wilting and reduced growth. In conclusion, understanding tonicity is fundamental for anyone involved in biology, medicine, or even agriculture. It explains how cells interact with their environments and how various solutions can affect cellular health. Whether it is ensuring that patients receive the correct intravenous fluids or understanding how plants maintain their structure, tonicity is a key concept that underscores many biological processes. By grasping this principle, we can better appreciate the delicate balance that sustains life at the cellular level.

‘tonicity’这个概念在生物学和医学等多个领域至关重要。‘tonicity’指的是一种溶液通过渗透作用影响细胞体积的能力。简单来说，它描述了溶液如何影响水分在细胞膜之间的移动。理解‘tonicity’对医疗专业人员至关重要，因为它有助于他们确定不同的静脉注射溶液将如何影响患者细胞。‘tonicity’主要有三种类型：等渗、高渗和低渗。等渗溶液与细胞内部的溶质浓度相同，因此不会导致水分的净移动。这是维持细胞健康的理想状态，因为它使细胞能够保持形状而不膨胀或收缩。相反，高渗溶液的溶质浓度高于细胞内部。当细胞置于高渗溶液中时，水分会从细胞中流出，以平衡溶质浓度。这可能导致细胞收缩，如果不加以监控，可能会导致严重后果。例如，如果患者过快接受高渗盐水溶液，可能会导致红血球收缩，进而引发溶血等并发症。另一方面，低渗溶液的溶质浓度低于细胞内部。当细胞暴露于低渗溶液中时，水分进入细胞，导致细胞膨胀并可能破裂。在医疗环境中，这一点尤其重要，因为它涉及到为补水选择适当类型的液体。给脱水患者施用低渗溶液可能是有益的，但必须谨慎进行，以避免损伤细胞。‘tonicity’的重要性不仅限于医学应用。在植物生物学中，‘tonicity’在维持膨压方面发挥着重要作用，这对植物的刚性和整体健康至关重要。当植物细胞处于低渗环境中时，它们会膨胀并变得膨胀，从而为植物提供结构支持。相反，在高渗条件下，植物细胞失去水分，导致萎蔫和生长减少。总之，理解‘tonicity’对于任何参与生物学、医学甚至农业的人来说都是基础知识。它解释了细胞如何与其环境相互作用，以及各种溶液如何影响细胞健康。无论是确保患者接受正确的静脉输液，还是理解植物如何维持其结构，‘tonicity’都是一个关键概念，强调了许多生物过程。通过掌握这一原理，我们可以更好地理解维持细胞水平生命的微妙平衡。