Urine formation and excretion demonstrator

Abstract

The invention relates to a urine formation and excretion presenter for presentation of urine by a teacher. The urine formation and excretion presenter comprises a base, a vertical plate, a water tank, a water pump, a PVC pipe, a plastic bottle, a rubber stopper, a guide pipe, a sponge, an acrylic square pipe, a rubber pipe, a glass ball and a beaker. According to the design of the urine formation and excretion presenter, liquid is used for simulating blood and urine, which is close to a real situation, so that students can intuitively feel the continuity of the formation of the urine and the intermittence of the excretion of the urine and the urine formation and excretion presenter can particularly present the glomerular filtration effect and the renal tubular reabsorption effect, specify abstract contents and simplify esoteric knowledge. The design provided by the invention has the advantages of reasonable design of the whole technology, simple structure, easiness in operation, repeatable experiments, easiness in obtainment of raw materials, high transparency and obvious phenomena, and can intuitively and conveniently teach and present urine formation and excretion processes and well break through many difficult points in class teaching.

Description

technical field [0001] The design of the invention relates to a biological experiment teaching aid, in particular to a demonstrator for teachers to demonstrate the formation and discharge of urine. Background technique [0002] At present, in junior high school biology teaching, teachers can only explain the composition of nephron and the process of urine formation and excretion, and can only analyze it in combination with textbook illustrations. However, because there is no simulated demonstrator that can present the dynamic process, the seventh grade students are struggling to understand the glomerulus. Filtration and reabsorption by renal tubules are more difficult. Or the existing dynamic model of urine formation (patent number: 01272706.7) is a model that uses light-emitting element groups and control circuits to produce dynamic flow visual effects. It is difficult to dynamically display the continuity of urine formation, which is different from the real situation. Ver...

AI Technical Summary

Problems solved by technology

[0002] At present, in junior high school biology teaching, teachers can only explain the composition of nephron and the process of urine formation and excretion, and can only analyze it in combination with textbook illustrations. However, because there is no simulated demonstrator that can present the dynamic process, the seventh grade students are struggling to understand the glomerulus. Filtration and reabsorption by renal tubules are more difficult

Or the existing dynamic model of urine formation (patent number: 01272706.7) is a model that uses light-emitting element groups and control circuits to produce dynamic flow visual effects. It is difficult to dynamically display the continuity of urine formation, which is different from the real situation. Very far, unable to allow students to perceive the dynamic process of urine formation and discharge

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