Question

activity to show the mechanism of breathing?

Answer 1

Answer:

Activity : Mechanism of Breathing

Two balloons are tied at the two ends of the tube. ... The air from inside the balloons goes out through the tube due to which the balloons get deflated (their size decreases). This shows the action of diaphragm during exhaling of air.

Answer 2

Answer:

Activity : Mechanism of Breathing

Two balloons are tied at the two ends of the tube. A thin rubber sheet is tied around the open bottom of the bell jar. In this apparatus, the space inside the bell jar represents the chest cavity, the balloons represent the lungs whereas the rubber sheet represents the diaphragm.