Diaphragm exercise simulator (Transparent lung lobes) designed to demonstrate how diaphragm movement changes chest volume and affects lung inflation. Clear, removable structure and visible lung lobes make the mechanics of breathing easy to observe for students and instructors. Key benefits Teaches the relationship between diaphragm action and lung volume in a visible, handson way. Simple manual operation shows inflation and deflation cycles without power or complex setup. Durable transparent materials allow clear observation of lung lobes and internal structure. Compact and lightweight for classroom demonstrations and lab use. What makes it stand out Transparent plastic container and realistic lung lobe model provide clear, detailed visualization. Elastic rubber bottom and Yshaped trachea let users create a closed chamber and control air flow precisely. Removable components make it easy to prepare, clean, and store. Specifications Name: Diaphragm exercise simulator (Transparent lung lobes) Size: 11.5 by 20 mm Weight: 290 g Material: Transparent plastic container, elastic rubber components, rubber stopper, rubber lung lobes Purpose: Let students understand the relationship between chest volume change and diaphragm activity How to use 1. Remove the rubber bottom and introduce a small amount of air into the lung lobes through the Yshaped trachea so the lobes are slightly expanded. 2. the rubber bottom to form a closed transparent chamber with the lung lobes connected to outside air. 3. Pull down the center of the rubber bottom to simulate diaphragm descent; the lung lobes visibly inflate. 4. Loosen the rubber bottom to allow the lobes to to a slightly inflated state. 5. Push the rubber bottom up to simulate diaphragm ascent; the lung lobes shrink. Components and structure Transparent plastic container for clear observation Elastic rubber bottom to simulate diaphragm movement Rubber stopper and Yshaped trachea to connect and inflate lung lobes Lung lobe model with clear lines and visible details Removable and reassembleable parts for easy demonstration and storage Typical use scenarios Secondary school or college physiology and anatomy class demonstrations to explain respiratory mechanics. Laboratory practical sessions where students perform handson experiments to observe lung inflation and deflation. Teacherled demonstrations in science workshops or open days to visually illustrate breathing mechanics. Package list Diaphragm exercise simulator x1 Notes Because of lighting and display differences, the product color may differ slightly from photos. Refer to the actual product. Size data are for reference only. Manual measurement may introduce an error of 1 to 3 cm. Please refer to the actual product.