Breathing supplies us with oxygen and gets rid of carbon dioxide - Leaving Cert Biology - Question c - 2017
Question c
Breathing supplies us with oxygen and gets rid of carbon dioxide.
(i) What other gas is excreted from the lungs with carbon dioxide?
(ii) Draw a labelled diagram t... show full transcript
Worked Solution & Example Answer:Breathing supplies us with oxygen and gets rid of carbon dioxide - Leaving Cert Biology - Question c - 2017
Step 1
What other gas is excreted from the lungs with carbon dioxide?
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Answer
The other gas excreted from the lungs along with carbon dioxide is water vapor.
Step 2
Draw a labelled diagram to show the structure of the human lungs.
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Answer
A diagram should include the trachea, lung outline, bronchi, bronchioles, and alveoli, clearly labeled with 'Lung', 'Trachea', 'Bronchus', 'Bronchiole', and 'Alveolus'.
Step 3
What is the function of the diaphragm in the human breathing system?
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Answer
The diaphragm functions to help vary the thoracic volume, which facilitates the process of inhalation and exhalation.
Step 4
Are the intercostal muscles (in the ribcage) relaxing or contracting when a person is inhaling (breathing in)?
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The intercostal muscles are contracting when a person is inhaling.
Step 5
Name one disorder associated with the breathing system.
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Answer
One disorder associated with the breathing system is asthma.
Step 6
Give one possible cause and one possible treatment of the disorder.
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One possible cause of asthma is exposure to allergens, and one possible treatment is the use of inhalers to relieve symptoms.
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