vasoconstrictor

简明释义

英[ˌveɪzəʊkənˈstrɪktə(r)]美[ˌvæsoʊkənˈstrɪktər]

n. 血管收缩剂；血管收缩神经

adj. 血管收缩的

英英释义

单词用法

同义词

反义词

例句

1.The balance of vasoconstrictor and vasodilator can maintain normal tension of blood vessel.

正常的血管张力要靠缩血管因子和舒血管因子之间的平衡来维护。

2.An adrenergic drug, C9H13NO2, that is a powerful vasoconstrictor and is used to relieve nasal congestion, dilate the pupils, and maintain blood pressure during anesthesia.

肾上腺素一种肾上腺素的药剂，c9h 13 no2，它是一种很强的血管收缩剂，可用于麻醉过程中减轻鼻充血、扩大瞳孔和稳定血压。

3.The results show; (1) The increased hepatic vasoconstrictor reactivity and the adhesive function of platelets in viral infection are the basic mechanism of the hepatic microcirculatory disturbance.

结果提示：（1）在病毒感染中肝血管收缩反应性上升及血小板粘附功能增强是肝微循环障碍发生的基础。

4.ACE inhibitors work by inhibiting the conversion of angiotensin I to the potent vasoconstrictor, angiotensin II, thereby improving blood flow and blood pressure.

ACE抑制剂的工作，通过抑制血管紧张素I的转化可以强化血管，血管紧张素Ⅱ可改善血流和血压。

5.The results show; (1) The increased hepatic vasoconstrictor reactivity and the adhesive function of platelets in viral infection are the basic mechanism of the hepatic microcirculatory disturbance.

结果提示：（1）在病毒感染中肝血管收缩反应性上升及血小板粘附功能增强是肝微循环障碍发生的基础。

6.Conclusion: Vasoconstrictor can increase tumor blood flow, increase flow velocity, decrease ri and it can be used in tumor hemodynamic study.

结论：血管收缩剂引起肿瘤血供增加，血液流速增快，阻力指数降低，可用于肿瘤的血流动力学研究。

7.Conclusion CRA seems to be relate to the renal and splenic hemodynamics, also relate to the histology, the Doppler parameters of portal hypertension and the activity of vasoconstrictor systems.

结论视网膜中动脉可能与肾脏、脾脏的血流动力学变化有关，同样与组织学、门脉高压多普勒参数和血管收缩系统的活性有关。

8.During cold weather, the body naturally produces vasoconstrictors 血管收缩剂 to conserve heat.

在寒冷的天气中，身体自然产生vasoconstrictors 血管收缩剂以保持热量。

9.The body releases epinephrine, which acts as a vasoconstrictor 血管收缩剂 to increase blood pressure during stressful situations.

在压力情况下，身体释放肾上腺素，它作为一种vasoconstrictor 血管收缩剂 来提高血压。

10.Norepinephrine is a powerful vasoconstrictor 血管收缩剂 that helps regulate blood flow.

去甲肾上腺素是一种强效的vasoconstrictor 血管收缩剂，有助于调节血流。

11.Certain medications are prescribed to act as vasoconstrictors 血管收缩剂 for patients with low blood pressure.

某些药物被开处方作为低血压患者的vasoconstrictors 血管收缩剂。

12.When you feel faint, your body may release vasoconstrictors 血管收缩剂 to stabilize blood pressure.

当你感到晕眩时，你的身体可能会释放vasoconstrictors 血管收缩剂以稳定血压。

作文

The human body is a complex system that relies on various physiological mechanisms to maintain homeostasis. One of the critical components of this system is the regulation of blood flow, which is influenced by various substances in the body. Among these substances, a particular type known as a vasoconstrictor plays a significant role in controlling vascular tone and blood pressure. A vasoconstrictor (血管收缩剂) is a substance that causes blood vessels to constrict, or narrow, which can lead to an increase in blood pressure. This process is essential for several reasons, including the regulation of blood flow to vital organs and the maintenance of adequate blood pressure during times of stress or physical exertion.When the body experiences stress, whether from physical activity, emotional strain, or environmental factors, it activates the sympathetic nervous system. This activation leads to the release of various hormones, including adrenaline and norepinephrine, which are potent vasoconstrictors. These hormones bind to receptors on the smooth muscle cells of blood vessels, causing them to contract. As a result, the diameter of the blood vessels decreases, leading to increased resistance to blood flow and ultimately raising blood pressure.The action of vasoconstrictors is not limited to acute responses; they also play a role in chronic conditions. For example, in patients with hypertension, the overactivity of vasoconstrictors can lead to persistently high blood pressure, which increases the risk of cardiovascular diseases. Therefore, understanding the mechanisms behind vasoconstrictors is crucial for developing effective treatments for such conditions.In addition to natural vasoconstrictors, there are also synthetic drugs designed to mimic their effects. These medications are often used in clinical settings to manage low blood pressure or to control bleeding during surgical procedures. By inducing vasoconstriction, healthcare providers can stabilize a patient’s condition and improve outcomes.Moreover, lifestyle factors can influence the levels of vasoconstrictors in the body. For instance, a diet high in salt can lead to increased production of vasoconstrictors, contributing to hypertension. Similarly, smoking is known to stimulate vasoconstrictor activity, further exacerbating cardiovascular risks. Therefore, managing dietary habits and avoiding harmful substances can be beneficial in regulating the effects of vasoconstrictors on the body.In conclusion, vasoconstrictors are vital substances that help regulate blood flow and maintain blood pressure in the human body. Their role in both acute and chronic physiological responses highlights the importance of understanding their function. With ongoing research, we continue to uncover more about how vasoconstrictors operate and how we can manipulate their effects for therapeutic purposes. As we strive for better health outcomes, knowledge about vasoconstrictors will undoubtedly remain a crucial area of study in medical science.

人类的身体是一个复杂的系统，依赖于各种生理机制来维持内环境的稳定。其中一个关键组成部分是血流的调节，这受到体内各种物质的影响。在这些物质中，一种特定类型被称为血管收缩剂，在控制血管张力和血压方面发挥着重要作用。血管收缩剂是导致血管收缩或变窄的物质，这可能导致血压升高。这一过程对于多种原因至关重要，包括对重要器官的血流调节以及在压力或身体活动时维持足够的血压。当身体经历压力时，无论是来自身体活动、情绪压力还是环境因素，都会激活交感神经系统。这种激活导致多种激素的释放，包括肾上腺素和去甲肾上腺素，它们是强效的血管收缩剂。这些激素与血管平滑肌细胞上的受体结合，导致它们收缩。因此，血管的直径减少，导致血流阻力增加，最终提高血压。血管收缩剂的作用不仅限于急性反应；它们在慢性病情中也发挥作用。例如，在高血压患者中，血管收缩剂的过度活跃可能导致持续的高血压，从而增加心血管疾病的风险。因此，理解血管收缩剂背后的机制对于开发有效治疗方案至关重要。除了天然的血管收缩剂，还有一些合成药物旨在模拟其效果。这些药物通常在临床环境中用于管理低血压或控制手术过程中的出血。通过诱导血管收缩，医疗提供者可以稳定患者的状况并改善结果。此外，生活方式因素也会影响体内血管收缩剂的水平。例如，高盐饮食可能导致血管收缩剂的产生增加，从而导致高血压。同样，吸烟被认为会刺激血管收缩剂的活性，进一步加剧心血管风险。因此，管理饮食习惯和避免有害物质对调节血管收缩剂在体内的影响是有益的。总之，血管收缩剂是帮助调节血流和维持人体血压的重要物质。它们在急性和慢性生理反应中的作用突显了理解其功能的重要性。随着研究的不断深入，我们继续揭示血管收缩剂的作用机制以及如何操控其效果以用于治疗目的。随着我们追求更好的健康结果，对血管收缩剂的知识无疑将继续成为医学科学研究的重要领域。