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Year : 2018  |  Volume : 3  |  Issue : 2  |  Page : 111-115

“Graph's disease” and students' anxieties in understanding physiology

Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia

Correspondence Address:
Prof. Hwee-Ming Cheng
Department of Physiology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/bjhs.bjhs_38_18

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Graphs are visual summaries that explain the phenomenon in different disciplines. Students who approach physiology in rote-learning mode usually have more difficulty and anxieties to understand the graphical information. Graphs can be used in many ways to conceptualize much of physiology. The relationship between the X-axis and Y-axis variables can indicate a cause and effect scenario as in the hemoglobin-oxygen association/dissociation. Temporal, sequential events are illustrated with the X-axis as the time parameter and several changing parameters can be followed along the Y-axis in a dynamic way as in the Wigger's cardiac cycle diagram. Graphs can also provide a different perspective on the fluctuations between two parameters that is produced by a third physiologic event as seen in the ventricular volume-pressure loop. Hopefully, this article on physiological graphs will help students to relax and enjoy looking and thinking through the different line profiles in graphs they face in their “Physbook.”

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