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  4. Narrate the effects of Chronic Obstructive Pulmonary Disease (COPD) on the human respiratory system: (i) asthma. (ii) chronic bronchitis. (iii) emphysema

Health Issues Related to the Human Respiratory System

8.4 Health Issues Related to The Human Respiratory System
 
Chronic Obstructive Pulmonary Disease (COPD)
Emphysema
  • In emphysema, the alveolus loses its elasticity and increases in size.
  • The alveolus wall is damaged, the total surface area of alveolus decreases and the gaseous exchange becomes less efficient.
Chronic Bronchitis
  • In chronic bronchitis, the bronchiole becomes inflamed, swollen and blocked.
  • This reduces the flow of air and causes difficulties in breathing.
  • A large amount of mucus formed will cause continuous coughing.
  • Damaged cilium causes difficulty in expelling mucus.
Asthma
  • For an asthmatic patient, the bronchiole walls become swollen and thick.
  • The opening of the bronchiole tube becomes smaller and the air passage becomes narrower.
  • This condition leads to difficulties in breathing and causes breathlessness.
 
 
The views expressed in the notes here are those of the contributor and don’t necessarily represent the views of pandai.

Health Issues Related to the Human Respiratory System

8.4 Health Issues Related to The Human Respiratory System
 
Chronic Obstructive Pulmonary Disease (COPD)
Emphysema
  • In emphysema, the alveolus loses its elasticity and increases in size.
  • The alveolus wall is damaged, the total surface area of alveolus decreases and the gaseous exchange becomes less efficient.
Chronic Bronchitis
  • In chronic bronchitis, the bronchiole becomes inflamed, swollen and blocked.
  • This reduces the flow of air and causes difficulties in breathing.
  • A large amount of mucus formed will cause continuous coughing.
  • Damaged cilium causes difficulty in expelling mucus.
Asthma
  • For an asthmatic patient, the bronchiole walls become swollen and thick.
  • The opening of the bronchiole tube becomes smaller and the air passage becomes narrower.
  • This condition leads to difficulties in breathing and causes breathlessness.
 
 
The views expressed in the notes here are those of the contributor and don’t necessarily represent the views of pandai.
Chapter : Respiratory System in Humans and Animals
Topic : Narrate the effects of Chronic Obstructive Pulmonary Disease (COPD) on the human respiratory system: (i) asthma. (ii) chronic bronchitis. (iii) emphysema
Form 4 Biology
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