Page 39 - Just for Middle School Life Science Mini Catalog

FLINN SCIENTIFIC I MIDDLE SCHOOL LIFE SCIENCEHUMAN BODY, CONTINUEDLung Model—Student Laboratory KitStudents can construct their own working lung models to demonstrate how differ-ential air pressure causes inspiration and expiration of air from the lungs. Plastic cups, rubber stoppers and balloons simulate body parts in this nearly indestructible model. FB1442 I $38.35Exercise, CO2 and Respiration—Student Laboratory KitStudents discover the essential relationship between breathing and cellular respiration by determining the relative amount of CO2 in exhaled air before and after exercise with an acid–base indicator. Students answer common breathing questions as they explore the complex biofeedback mecha-nism in the body’s production of CO2 and pH to regulate breathing. 2 options available at flinnsci.com$33.15–$68.65Lung ModelThis low-cost model articulates all the major internal structures of the lung with its open, cutaway view of the inside of the lung. Trachea, bronchus, lymph nodes, pulmonary artery and veins are some structures identified. A durable full-color teaching guide is included. 11.5 x 16 x 19 cm.FB1136 I $91.95Functioning Lung Model—Demonstration KitExtra large with clear plastic housing, this functioning lung model is visible from the back of the classroom. Rubber stoppers on the ends of the bronchus make replac-ing worn out lungs easier than traditional models that use string or rubber bands. Handle on the durable, latex diaphragm allows for easier expansion of the balloon lungs during operation.FB1110 I $39.70Breathing Fitness LabThrough various activities, students exper-iment with breathing rates, breath and lung volume, breath control and the CO2 in exhaled air. Students understand how breathing and respiration relate to fitness and exercise, how measured parameters correlate with height and weight and the consequences of lung damage. FB0053 I $212.95