Question

State whether the following statements are true or false:
Statement 1: One breath means one inhalation and one exhalation.
Statement 2: The size of the chest cavity decreases during exhalation.

• A. Statement 1: True; Statement 2: False
  
• B. Statement 1: False; Statement 2: True
  
• C. Statement 1: True; Statement 2: True
  
• D. Statement 1: False; Statement 2: False
  

Answer 1

The correct option is C Statement 1: True; Statement 2: True

• Inhalation is the process of taking in oxygen rich air and exhalation is the process of giving out the carbon dioxide rich air.
• One breath means one inhalation and one exhalation.
• During exhalation, the diaphragm moves up and the rib cage moves inward.
• This leads to a decrease in the volume of the chest cavity, and the air is pushed out of the lungs.