arteriole
简明释义
n. [解剖] 小动脉；细动脉
英英释义
A small blood vessel that branches off from an artery and leads to capillaries. | 一种从动脉分支出来的小血管，通向毛细血管。 |
单词用法
毛细血管前小动脉 | |
阻力小动脉 | |
末端小动脉 | |
扩张小动脉 | |
收缩小动脉 | |
血液通过小动脉流动 |
同义词
| 小动脉 | 小动脉调节血液流入毛细血管床。 | ||
| 动脉分支 | An increase in resistance in the arterial branches can lead to higher blood pressure. | 动脉分支的阻力增加可能导致血压升高。 |
反义词
| 小静脉 | 小静脉从毛细血管收集血液。 | ||
| 静脉 | 静脉将缺氧血液送回心脏。 |
例句
1.RESULTS:A linear contraction of the arteriole was observed during initial ischemia.
结果：脑缺血初期，细动脉呈线状收缩。
2.Edema associated with dihydropyridine calcium antagonists is a localized phenomenon involving varying differences in arteriole and venous dilation and does not appear to be related to heart failure.
二氢吡啶类钙拮抗剂引起的水肿为局部症状，包括动脉和静脉扩张的不同差异，似与心力衰竭无关。
3.Kidneys and hearts were collected to observe the pathological changes of arteriole too.
同时观察心脏和肾脏血管组织学改变。
4.The degree of the renal parenchyma thickness becoming thin showed renal arteriole sclerosis and the decreased number of remnant nephron.
肾实质变薄的程度表明肾小动脉硬化，残存肾单位总数下降。
5.There were connecting vessels between the villi arteriole and the villi venule at the tip of the villi, and they form a precapillary arteriovenous anastomosis.
绒毛微动脉在顶部与绒毛微静脉有交通支，形成毛细血管前动静脉吻合。
6.The glomerulus here stained with PAS shows nodular deposits of amorphous material (nodular glomerulosclerosis) along with a thickened arteriole at the lower right.
这个PAS染色的肾小球可见右下角处的增厚的细动脉管壁有无定形的物质沉积。
7.The property of arteriole as a "resistant vessel" and the efficiency of microvascular network as heat exchanger are also shown.
计算还表明了微动脉“阻力血管”的性质和微血管网络在热量交换过程中的高效性。
8.The arteriole here has an "onion skin" appearance typical of hyperplastic arteriolosclerosis.
细动脉呈“洋葱皮”外观，这是增生性细动脉硬化的典型表现。
9.The left pulmonary arterial pressure was higher than that of right pulmonary arterial pressure and the pathological changes were less evident in the right pulmonary arteriole.
左肺动脉压力高于右肺，右肺小动脉的病理改变亦较左肺为轻。
10.During exercise, the body dilates the arteriole to increase blood flow to the muscles.
在运动期间，身体扩张小动脉以增加对肌肉的血流量。
11.In patients with hypertension, the arteriole may become constricted, leading to increased resistance.
在高血压患者中，小动脉可能会变得收缩，导致阻力增加。
12.The blood flows from the arteries into the arteriole, which regulates blood flow to the capillaries.
血液从动脉流入小动脉，调节血液流向毛细血管。
13.The arteriole plays a crucial role in controlling blood pressure within the circulatory system.
小动脉在控制循环系统内的血压方面起着至关重要的作用。
14.The arteriole is an important site for the exchange of nutrients and waste products.
小动脉是营养物质和废物交换的重要场所。
作文
The human body is a complex system that relies on various structures to maintain its functions. One of the critical components of this system is the circulatory system, which is responsible for transporting blood, nutrients, and oxygen throughout the body. Within this intricate network of blood vessels, the role of the arteriole (小动脉) is paramount. Arterioles are small blood vessels that branch out from arteries and lead to capillaries. They play a crucial role in regulating blood flow and blood pressure, making them essential to overall health.Arterioles are not merely passive conduits; they actively regulate the flow of blood to different tissues based on the body's needs. For instance, during physical activity, the body requires more oxygen and nutrients to fuel the muscles. In response, the arterioles dilate, allowing more blood to flow to the active muscles. This process is known as vasodilation, and it is vital for maintaining optimal performance during exercise.Conversely, when the body is at rest, the arterioles constrict to reduce blood flow to non-essential areas, thereby conserving energy and directing resources where they are most needed. This ability to adjust blood flow is controlled by various factors, including neural signals and local metabolic demands. Thus, the arteriole (小动脉) serves as a key regulator in the distribution of blood throughout the body.In addition to their role in blood flow regulation, arterioles also play a significant part in blood pressure regulation. The constriction and dilation of these vessels can significantly impact systemic vascular resistance, which is a major determinant of blood pressure. When arterioles constrict, resistance increases, leading to higher blood pressure. Conversely, when they dilate, resistance decreases, resulting in lower blood pressure. This dynamic interplay is crucial for maintaining homeostasis within the circulatory system.Furthermore, arterioles are involved in various pathological conditions. For example, in diseases such as hypertension, the arterioles may become stiff or narrowed, contributing to elevated blood pressure levels. Understanding the function and structure of arterioles can provide insights into the mechanisms underlying such diseases and inform potential treatment strategies.Research into arterioles has also led to advancements in medical science. For instance, drugs that target the dilation of arterioles can be used to treat high blood pressure. By promoting vasodilation, these medications help to lower blood pressure and reduce the risk of heart disease and stroke. This illustrates the importance of understanding the biology of arterioles in developing effective therapeutic interventions.In conclusion, arterioles (小动脉) are much more than just small blood vessels; they are essential components of the circulatory system that play a vital role in regulating blood flow and blood pressure. Their ability to respond dynamically to the body’s needs highlights their importance in both health and disease. As research continues to uncover the complexities of these tiny vessels, our understanding of their significance in the human body will only deepen, paving the way for innovative treatments and improved health outcomes.
