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Description | In this activity, students explore four specific scenarios in which blood volume and/or blood osmolarity has been perturbed. Students work in teams to predict the effects of these perturbations on urine volume and osmolarity. Students are then provided with a data set showing the urine volume, urine specific gravity, urine chloride, urine color and transparency over a 90 minute time interval. Students work in teams to graph and interpret the data set and compare it to their predictions. They then use their understanding of the factors that regulate hormone release and the subsequent actions of the hormones to explain their data and complete a series of questions. Student teams report their results to the class. | |||
Type of Resource | Assignment/Activity (Non-Laboratory/Non-Hands on Activity), Digital Presentation (Powerpoint), Laboratory or Hands-On Activity | |||
Format | Portable Document Format - PDF | |||
Author |
Cynthia Surmacz, Bloomsburg University
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Development Date | December 5, 2014 | |||
Grade/Age Levels |
Undergraduate lower division (Grades 13-14) Undergraduate upper division (Grades 15-16) |
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Pedagogies | ||||
National Science Educational Standards |
Evidence, models, and explanation (K-12), Personal and community health (9-12), Systems, order, and organization (K-12) | |||
Learning Time | 2-3 hours | |||
Language | English | |||
Type of Review | Reviewed By LifeSciTRC Board | |||
Review Date | April 9, 2015 | |||
Funding Source | None | |||
Keywords | ||||
Suggested Use |
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This classroom activity/dry lab is a great addition to an undergraduate physiology course to help students learn about the kidney’s role in osmoregulation, fluid balance and blood pressure regulation. The activity teaches these concepts several ways. After students are provided with an introduction of the actions of aldosterone, ADH and atrial natriuretic hormone, the students fill in a summary table of the hormones and their actions. Then the students predict the actions of the hormones under different situations using a flow charts. Next the students are given data about urine specific gravity, urine volume and color of individuals who drank one of four different types of solutions: normal solution, isotonic solution, salt-loaded solution, and water-loaded solution. The students graph the results and predict which student drank what solution. I plan to use this next time I teach physiology.
Cynthia Motzny, Roosevelt University