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Ultrasound imaging in teaching cardiac physiology
This laboratory session provides hands-on experience for students to visualize the beating human heart with ultrasound imaging. Simple views are obtained from which students can directly measure important cardiac dimensions in systole and diastole. This allows students to derive, from first principles, important measures of cardiac function, such as stroke volume, ejection fraction, and cardiac output. By repeating the measurements from a subject after a brief exercise period, an increase in stroke volume and ejection fraction are easily demonstrable, potentially with or without an increase in left ventricular end-diastoli...
Source: AJP: Advances in Physiology Education - July 20, 2016 Category: Universities & Medical Training Authors: Johnson, C. D., Montgomery, L. E. A., Quinn, J. G., Roe, S. M., Stewart, M. T., Tansey, E. A. Tags: HOW WE TEACH: CLASSROOM AND LABORATORY RESEARCH PROJECTS Source Type: research

Using stimulation of the diving reflex in humans to teach integrative physiology
During underwater submersion, the body responds by conserving O2 and prioritizing blood flow to the brain and heart. These physiological adjustments, which involve the nervous, cardiovascular, and respiratory systems, are known as the diving response and provide an ideal example of integrative physiology. The diving reflex can be stimulated in the practical laboratory setting using breath holding and facial immersion in water. Our undergraduate physiology students complete a laboratory class in which they investigate the effects of stimulating the diving reflex on cardiovascular variables, which are recorded and calculated...
Source: AJP: Advances in Physiology Education - November 29, 2014 Category: Universities & Medical Training Authors: Choate, J. K., Denton, K. M., Evans, R. G., Hodgson, Y. Tags: SOURCEBOOK OF LABORATORY ACTIVITIES IN PHYSIOLOGY Source Type: research