Formative Practice 8.4 (Form 4 Biology Textbook Exercise and Answer)

Question 1:
What are the effects of chronic bronchitis on the bronchiole?

Bronchioles become inflamed, swollen and clogged.

Question 2:
Explain the condition of bronchiole walls in asthmatic patients.

The bronchiole walls swell and thicken. The opening of bronchiole tube becomes smaller and the airway becomes narrower.

Question 3:
How does the usage of an inhaler help an asthmatic patient to breathe?

Inhaler reduces inflammation and opens up the bronchiole tubes so that air can flow easily.

Question 4:
Explain why the gaseous exchange becomes less efficient for an emphysema patient.

The alveoli walls become damaged. The surface area of the alveoli is reduced and gaseous exchange becomes less efficient.

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