Institute of Clinical Sciences, University of Birmingham, Edgbaston, Birmingham, United Kingdom.
Adv Physiol Educ. 2020 Sep 1;44(3):436-443. doi: 10.1152/advan.00004.2019.
The laboratory practical reported here is based in Poiseuille's law and utilizes low-cost laboratory consumable items, thereby making it easy to deploy in any teaching laboratory. In the practical, students take an experimental approach of individually changing physical variables and measuring fluid flow rates. Plotting these results allows them to discuss the effect each variable has on flow. Furthermore, students enhance their appreciation of experimental errors and variability by making repeat measurements. In the follow-up teaching session, the students are encouraged to apply their experimental findings to the cardiovascular system and the control of blood flow both at rest and under conditions of altered cardiac output, such as during exercise. By tackling the topic of flow control as a core concept, it allows the students to then apply their understanding in wider physiological contexts, such as airflow in the respiratory system.
本实验报告基于泊肃叶定律，并使用低成本的实验室耗材，因此易于在任何教学实验室中部署。在实验中，学生采用实验方法分别改变物理变量并测量流体流速。绘制这些结果可以使他们讨论每个变量对流量的影响。此外，学生通过进行重复测量来提高对实验误差和可变性的认识。在后续的教学课程中，鼓励学生将实验结果应用于心血管系统以及在休息和改变心输出量的情况下的血流控制，例如在运动期间。通过将流量控制作为核心概念来处理，这可以使学生将他们的理解应用于更广泛的生理环境中，例如呼吸系统中的气流。
