baroreceptors

简明释义

英[ˌbærəʊrɪˈsɛptəz]美[ˌbɛroʊrɪˈsɛptərz]

n. [解剖][生理]压力感受器（baroreceptor 的复数）

英英释义

单词用法

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例句

1.The opposite happens when the baroreceptors and brain detect low blood pressure.

当压力感受器和大脑发现低血压时，相反的发生。

2.The device works with the body's baroreceptors.

该装置与机体的压力感受器一起工作。

3.When blood pressure rises, the baroreceptors send messages to the brain.

当血压上升时，压力感受器向大脑发送信号。

4.The opposite happens when the baroreceptors and brain detect low blood pressure.

当压力感受器和大脑发现低血压时，相反的发生。

5.The body's response to changes in blood pressure is largely mediated by baroreceptors, which are sensitive to stretch in the arterial walls.

身体对血压变化的反应主要由压力感受器介导，这些感受器对动脉壁的拉伸非常敏感。

6.When you stand up quickly, baroreceptors help regulate your blood pressure to prevent dizziness.

当你迅速站起时，压力感受器帮助调节你的血压，以防止头晕。

7.In patients with hypertension, baroreceptors may become less responsive over time.

在高血压患者中，压力感受器可能会随着时间的推移而变得反应迟钝。

8.Certain medications can affect the sensitivity of baroreceptors, impacting blood pressure control.

某些药物可以影响压力感受器的敏感性，从而影响血压控制。

9.Researchers are studying how baroreceptors influence heart rate variability during exercise.

研究人员正在研究压力感受器在运动中如何影响心率变异性。

作文

The human body is a complex system that relies on various mechanisms to maintain homeostasis, one of which involves the role of baroreceptors. These specialized sensory receptors are primarily located in the walls of blood vessels, particularly in the carotid sinus and the aortic arch. Their primary function is to detect changes in blood pressure and relay this information to the central nervous system. Understanding how baroreceptors work is crucial for comprehending cardiovascular physiology and the body's response to different stimuli.When blood pressure rises, the baroreceptors are stretched, triggering them to send signals to the brain. This information is processed in the medulla oblongata, which then initiates a series of responses to lower the blood pressure. These responses include decreasing heart rate and dilating blood vessels, which help to reduce the overall pressure within the circulatory system. Conversely, when blood pressure drops, the baroreceptors become less stimulated, leading to an increase in heart rate and constriction of blood vessels to restore normal pressure levels.The importance of baroreceptors extends beyond mere blood pressure regulation; they play a vital role in the body's ability to adapt to changes in posture and activity levels. For instance, when a person stands up quickly, gravity causes blood to pool in the lower extremities, potentially leading to a drop in blood pressure. In such cases, the baroreceptors quickly detect this change and signal the body to compensate, ensuring that adequate blood flow reaches the brain and preventing dizziness or fainting.Moreover, baroreceptors are also involved in long-term blood pressure regulation. Chronic high blood pressure can lead to changes in the sensitivity of these receptors. If the baroreceptors become less responsive due to prolonged exposure to high pressure, this can result in a further increase in blood pressure, creating a vicious cycle that may lead to hypertension. Therefore, maintaining healthy baroreceptors is essential for overall cardiovascular health.In summary, baroreceptors are critical components of the cardiovascular system, providing essential feedback about blood pressure changes. Their ability to detect and respond to fluctuations in blood pressure helps maintain homeostasis, ensuring that the body functions optimally under varying conditions. As research continues to uncover the complexities of the human body, the study of baroreceptors will undoubtedly remain a significant area of interest for scientists and healthcare professionals alike. Understanding their function not only enhances our knowledge of physiology but also informs potential treatments for cardiovascular diseases, making it imperative to appreciate the intricate roles these tiny receptors play in our daily lives.

人类身体是一个复杂的系统，依赖于各种机制来维持内环境稳定，其中之一就是压力感受器的作用。这些特殊的感官受体主要位于血管壁中，特别是在颈动脉窦和主动脉弓中。它们的主要功能是检测血压变化并将这些信息传递给中枢神经系统。理解压力感受器的工作原理对于理解心血管生理学以及身体对不同刺激的反应至关重要。当血压升高时，压力感受器被拉伸，触发它们向大脑发送信号。这些信息在延髓中处理，然后启动一系列降低血压的反应。这些反应包括降低心率和扩张血管，这有助于减少循环系统内的总体压力。相反，当血压下降时，压力感受器的刺激减弱，导致心率增加和血管收缩，以恢复正常的压力水平。压力感受器的重要性不仅限于简单的血压调节；它们在身体适应姿势和活动水平变化的能力中也起着至关重要的作用。例如，当一个人迅速站起来时，重力会导致血液聚集在下肢，可能导致血压下降。在这种情况下，压力感受器迅速检测到这一变化并向身体发出补偿信号，确保足够的血液流向大脑，防止头晕或晕厥。此外，压力感受器还参与长期血压调节。慢性高血压可能导致这些受体敏感性的变化。如果由于长时间高压暴露而使得压力感受器的反应性降低，这可能导致血压进一步升高，形成一个恶性循环，可能导致高血压。因此，维持健康的压力感受器对于整体心血管健康至关重要。总之，压力感受器是心血管系统的重要组成部分，提供关于血压变化的基本反馈。它们检测和响应血压波动的能力有助于维持内环境稳定，确保身体在不同条件下的最佳功能。随着研究不断揭示人类身体的复杂性，对压力感受器的研究无疑将继续成为科学家和医疗专业人员的重要关注领域。理解它们的功能不仅增强了我们对生理学的知识，还为心血管疾病的潜在治疗提供了信息，因此必须重视这些微小受体在我们日常生活中所发挥的复杂作用。