9700 · topic questions
The gas exchange system
7 past-paper questions on The gas exchange system
With reference to Fig. 4.1 and Fig. 4.2, describe and explain how the changes that occur as a result of granuloma formation: •…
Practise the full question →Microscope slides were prepared from two regions of the gas exchange system. Fig. 1.2 and Fig. 1.3 are photomicrographs of the…
Practise the full question →Suggest and explain how a steep oxygen concentration gradient is maintained in the lungs.
Practise the full question →One consequence of the pneumonia that results from P. jirovecii infection is a decrease in the quantity of oxygen that is…
Practise the full question →On Fig. 4.1, use a label line and label: • a bronchus • a bronchiole • a blood vessel.
Practise the full question →Describe the role of cartilage in the gas exchange system.
Practise the full question →Explain how smooth muscle cells in the walls of the bronchioles contribute to the function of these airways.
Practise the full question →
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