Asthma and the body

When you breathe, air travels into your lungs and through your airways. People with asthma have over-sensitive airways which react to certain triggers.

A healthy airway allows normal breathing to occur. 

  • The lining is normal
  • The outer muscle is relaxed
  • The airway is wide open

An airway with asthma makes breathing difficult.

  • The airways become over-sensitive and react to triggers
  • The muscle around the outside of the airway tightens up
  • The lining becomes swollen and inflamed, making more mucus