Respiratory System

• What happens to the intercostal muscles during inhalation?

  They contract
• What is the effect of the ribcage moving up and out during inhalation?

  It increases the volume of the thorax
• What happens to the diaphragm during inhalation?

  It contracts and flattens
• What is the result of the thorax's volume increasing during inhalation?

  The pressure of the thorax decreases
• Why does air move into the lungs during inhalation?

  Due to pressure difference
• What happens to the intercostal muscles during exhalation?

  They relax
• What is the effect of the ribcage moving down and in during exhalation?

  It decreases the volume of the thorax
• What happens to the pressure of the thorax during exhalation?

  It increases
• Why does air move out of the lungs during exhalation?

  Due to pressure difference
• What happens to the diaphragm during exhalation?

  It relaxes and moves up
• What are the main components involved in the respiratory system?

  • Trachea
  • Intercostal muscles
  • Rib
  • Bronchus
  • Bronchioles
  • Diaphragm
  • Pleural membrane
  • Alveoli
  • Lung
  • Thorax
• Trachea


  Label A

  
• Intercostal muscles 


  Label B

  
• Rib


  Label C

  
• Bronchus


  Label D

  
• Bronchioles


  Label E

  
• Diaphragm 


  Label F

  
• Thorax 


  Label G

  
• Lung


  Label H

  
• Alveoli


  Label I

  
• Pleural Membrane


  Label J