Department of Veterinary Physiology and Pharmacology and Michael E. DeBakey Institute, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas.
Adv Physiol Educ. 2020 Jun 1;44(2):163-168. doi: 10.1152/advan.00104.2019.
Blood flow through the cardiovascular system is governed by the same physical rules that govern the flow of water through domestic plumbing. Using this analogy in a teaching laboratory, a model of the cardiovascular system constructed of pumps and pipes was used to demonstrate the basic interactions of pressure, flow, and resistance in a regulated system, with student volunteers providing the operational actions and regulatory components. The model was used to validate predictions and explore solutions prompted by student discussion. This interactive teaching laboratory provides an engaging experiential exercise that demonstrates regulation of flow and pressure in an intact cardiovascular system with apposite changes in heart rate and resistance. In addition, the system provides strong clinical correlates and illustrates how that regulated system responds to challenges such as heart failure, inappropriate vasodilation, and hemorrhage. The results demonstrate that, with limited practice, the instructor can effectively guide the students to reliably reproduce physiologically appropriate results.
血流通过心血管系统是由同样的物理规则控制的，就像水在家庭管道中的流动一样。在教学实验室中，使用这种类比，一个由泵和管道组成的心血管系统模型被用来演示在一个调节系统中压力、流量和阻力的基本相互作用，学生志愿者提供操作动作和调节组件。该模型用于验证预测，并根据学生讨论提出解决方案。这种互动式教学实验室提供了一个引人入胜的体验式练习，用适当改变心率和阻力来演示完整心血管系统中的流量和压力调节。此外，该系统提供了强有力的临床相关性，并说明了调节系统如何应对心力衰竭、血管舒张不当和出血等挑战。结果表明，经过有限的练习，教师可以有效地指导学生可靠地再现生理上合适的结果。
