Activity 1 Botttled balloons
how does the movement of the diaphragm cause the air to go in and out of the lungs?
Answer (1)
The diaphragm is a dome-shaped muscle located below the lungs. It plays a very important role in breathing.When you inhale (breathe in):The diaphragm contracts (moves downward).This creates more space in the chest cavity.Because of the extra space, the pressure inside your lungs becomes lower than the pressure outside your body.Air naturally moves into your lungs to fill this space.When you exhale (breathe out):The diaphragm relaxes (moves back upward into its dome shape).This reduces the space in the chest cavity.The pressure inside your lungs becomes higher than the outside air pressure.Air is pushed out of your lungs.Using the Bottled Balloon Model:The balloons inside the bottle represent your lungs.The rubber or balloon at the bottom represents the diaphragm.When you pull the rubber at the bottom (like the diaphragm contracting), the balloons inside inflate—this is inhalation. When you let it go (like the diaphragm relaxing), the balloons deflate—this is exhalation.
