carotid sinus

简明释义

颈动脉窦

英英释义

例句

1.The doctor explained how the carotid sinus 颈动脉窦 helps regulate blood pressure.

医生解释了如何通过颈动脉窦 carotid sinus来调节血压。

2.An increase in heart rate can occur if the carotid sinus 颈动脉窦 is stimulated.

如果刺激了颈动脉窦 carotid sinus，心率可能会增加。

3.Patients with carotid artery disease may experience issues with their carotid sinus 颈动脉窦 function.

患有颈动脉疾病的患者可能会遇到他们的颈动脉窦 carotid sinus功能问题。

4.The carotid sinus 颈动脉窦 plays a crucial role in the baroreceptor reflex.

在压力感受器反射中，颈动脉窦 carotid sinus起着至关重要的作用。

5.During the physical examination, the physician palpated the carotid sinus 颈动脉窦 to check for abnormalities.

在体检过程中，医生触诊了颈动脉窦 carotid sinus以检查是否有异常。

作文

The human body is an intricate and fascinating system, where every part plays a crucial role in maintaining overall health. One of the lesser-known yet essential components of our cardiovascular system is the carotid sinus. The carotid sinus is a dilation located at the bifurcation of the common carotid artery into the internal and external carotid arteries. This area is not just a simple anatomical structure; it serves vital functions in regulating blood pressure and ensuring that our brain receives an adequate supply of oxygenated blood.To understand the significance of the carotid sinus, we must first delve into its role in the body's feedback mechanisms. The carotid sinus contains baroreceptors, which are specialized nerve endings sensitive to changes in blood pressure. When blood pressure rises, these baroreceptors detect the increased stretch of the arterial walls and send signals to the brain, particularly the medulla oblongata. In response, the brain activates parasympathetic pathways to lower the heart rate and dilate blood vessels, thus reducing blood pressure.Conversely, if blood pressure drops, the carotid sinus baroreceptors sense this change and trigger mechanisms to increase heart rate and constrict blood vessels, helping to restore normal blood pressure levels. This feedback loop is crucial for maintaining homeostasis within the body, and any dysfunction in this system can lead to severe health issues such as hypertension or hypotension.Moreover, the carotid sinus is also involved in the regulation of cerebral blood flow. The brain is highly sensitive to fluctuations in blood supply, and the carotid sinus helps ensure that there is a constant and sufficient flow of blood to meet the metabolic demands of neural tissue. This is particularly important during physical exertion or stress when the brain requires more oxygen and nutrients.In clinical practice, the carotid sinus can be a focal point for various medical conditions. For instance, carotid sinus hypersensitivity is a condition where excessive stimulation of the carotid sinus leads to fainting or syncope. This can occur due to pressure on the neck or even from certain movements. Understanding the carotid sinus and its responses is critical for diagnosing and managing such conditions effectively.Furthermore, the carotid sinus is often examined during procedures like carotid endarterectomy, which is performed to clear blocked arteries. Surgeons need to be aware of the carotid sinus location and its function to avoid complications that could arise from disrupting its normal physiology.In conclusion, the carotid sinus is a remarkable structure that plays a pivotal role in the cardiovascular and neurological systems. Its ability to monitor and regulate blood pressure is essential for maintaining the delicate balance required for optimal bodily function. As we continue to advance our understanding of human anatomy and physiology, the importance of the carotid sinus in both health and disease will undoubtedly become more apparent, highlighting the need for continued research and education in this area.

人体是一个复杂而迷人的系统，每个部分在维持整体健康方面都发挥着至关重要的作用。我们心血管系统中一个鲜为人知但却至关重要的组成部分是颈动脉窦。颈动脉窦是位于颈动脉分叉处的扩张部位，常见于颈总动脉分为内外颈动脉的地方。这个区域不仅仅是一个简单的解剖结构；它在调节血压和确保大脑获得足够的氧合血液方面发挥着重要作用。要理解颈动脉窦的重要性，我们必须首先深入了解其在身体反馈机制中的作用。颈动脉窦包含压力感受器，这些是对血压变化敏感的专门神经末梢。当血压升高时，这些压力感受器会检测到动脉壁的伸展增加，并向大脑发送信号，特别是延髓。作为回应，大脑激活副交感神经通路以降低心率并扩张血管，从而降低血压。相反，如果血压下降，颈动脉窦的压力感受器会感知到这一变化，并触发机制以增加心率和收缩血管，从而帮助恢复正常血压水平。这个反馈循环对于维持体内稳态至关重要，任何系统的功能障碍都可能导致严重的健康问题，如高血压或低血压。此外，颈动脉窦还参与脑血流的调节。大脑对血液供应的波动非常敏感，而颈动脉窦有助于确保有恒定和充足的血流，以满足神经组织的代谢需求。这在身体运动或压力期间尤其重要，因为大脑需要更多的氧气和营养。在临床实践中，颈动脉窦可以成为各种医学情况的焦点。例如，颈动脉窦过敏是一种病症，其中对颈动脉窦的过度刺激导致晕厥或昏厥。这可能由于颈部施加压力或某些动作引起。理解颈动脉窦及其反应对于有效诊断和管理此类情况至关重要。此外，颈动脉窦在进行颈动脉内膜切除术等手术时也常常被检查，该手术用于清除阻塞的动脉。外科医生需要了解颈动脉窦的位置及其功能，以避免破坏其正常生理功能而引发的并发症。总之，颈动脉窦是一个了不起的结构，在心血管和神经系统中发挥着关键作用。它监测和调节血压的能力对于维持最佳身体功能所需的微妙平衡至关重要。随着我们对人类解剖学和生理学理解的不断深入，颈动脉窦在健康和疾病中的重要性无疑将变得更加明显，突显出在这一领域继续进行研究和教育的必要性。