Give one role for each of the following in defence against disease - Leaving Cert Biology - Question 12 - 2016
Question 12
Give one role for each of the following in defence against disease.
(i) The skin.
(ii) Cilia in the airway.
(iii) Acid in the stomach.
Worked Solution & Example Answer:Give one role for each of the following in defence against disease - Leaving Cert Biology - Question 12 - 2016
Step 1
The skin.
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Answer
The skin acts as a barrier to pathogens, preventing their entry into the body. Additionally, it can produce antimicrobial secretions that help kill or inhibit the growth of microbes.
Step 2
Cilia in the airway.
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Answer
Cilia in the airway function by moving mucus out of the airways, trapping pathogens and debris, which are then expelled from the body, thus helping to keep the respiratory system clear of infections.
Step 3
Acid in the stomach.
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Answer
The acid in the stomach plays a crucial role in defence against disease by killing pathogens that enter the digestive system, thus preventing infections.
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