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Hands-on laboratory experience in teaching-learning physiology.

W C Randall1, T Burkholder

  • 1Department of Biology, Taylor University, Upland, Indiana 46989.

The American Journal of Physiology
|December 1, 1990
PubMed
Summary
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Hands-on physiology labs using Grass polygraphs revitalized student interest. Students recorded their own electrocardiograms and observed physiological responses in various organisms, enhancing organ-system physiology learning.

Area of Science:

  • Physiology education
  • Biomedical instrumentation

Background:

  • Traditional physiology demonstrations may not fully engage students.
  • Reintroducing hands-on laboratory experiments can enhance learning outcomes.

Purpose of the Study:

  • To evaluate the impact of reactivated Grass polygraphs on student engagement in physiology labs.
  • To explore novel physiological recordings, such as sweat recruitment patterns during exercise.

Main Methods:

  • Reactivated and utilized Grass polygraphs (vacuum tube model 5) for hands-on experiments.
  • Students performed self-recordings (electrocardiograms) and recorded data from various biological specimens (frog, turtle, rabbit).
  • Investigated noninvasive sweat recruitment patterns in students during exercise.

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Main Results:

  • Observed a significant rejuvenation of student interest and excitement in premed and introductory science classes.
  • Successfully recorded electrocardiograms, physiological data from diverse organisms, and novel sweat recruitment patterns.
  • Documented sweat recruitment patterns progressing from lower to upper extremities and face during exercise.

Conclusions:

  • Hands-on laboratory teaching with Grass polygraphs is a premier method for organ-system physiology education.
  • Student participation and group discussions significantly enhance the learning process.
  • The study reports the first observation of specific sweat recruitment patterns during exercise.