Making a Model of the Lungs

What part of the respiratory system does the balloon at the bottom of the model represent?

• • a) Lungs

• • b) Diaphragm

• • c) Trachea

• • d) Ribs

What happens to the balloon inside the bottle when you pull the bottom balloon down?

• d) It bursts

• • a) It deflates

• • b) It inflates

• • c) Nothing changes

What happens to the air inside the bottle when you push the bottom balloon up?

• • a) Air goes into the balloon

• • b) Air comes out of the balloon

• • c) Air stays the same

What does the bottle in the model represent?

• • a) Chest cavity

• • b) Lungs

• • c) Diaphragm

Which process does the model demonstrate when air enters the balloon inside the bottle?

• • a) Exhalation

• • b) Inhalation

• • c) Digestion

• • d) Circulation

Which part of the respiratory system controls the air movement in and out of the lungs in real life?

• • a) Heart

• • b) Ribs

• • c) Diaphragm

• • d) Stomach