Classic Experimentation and Working Models for Engaging and Inspiring Students
Year: 2012
Type: article
Abstract: We developed a simple working model of the semilunar valve to highlight the mechanism of semilunar valve closure as a consequence of the decelerated systolic efflux. The model is inexpensive and simple to build, all that is required is two sections of tubing {one 10 cm long, 31 mm x 25 mm, and another 5 cm long, 25 mm x 19 mm (outside and inside diameter)}, and a long balloon (approx. 2.5 cm diameter). Instructions to build the model are provided. Once the model is fully assembled, place the model under a facet and run water through one end. Reverse ends and repeat the procedure. As you will discover, water will flow through the model in only one direction. A discussion of the physiological significance of one‐way valves in the heart will naturally evolve to their importance in veins (an often under‐discussed and appreciated regulatory mechanism). Building and testing the model with the assigned readings of the pioneering work of Giulio Ceradini was rewarding for the teacher and students. The activity encouraged in‐class discussion, collaborative problem‐solving, and inquiry‐based thinking. This activity also focused student learning on how to use scientific knowledge to solve important questions.
Source: The FASEB Journal
Institutions: Universidad Nacional de La Plata, Wayne State University
Language: English
Subfield: Cognitive Neuroscience
Field: Neuroscience
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W1536700677