Biology · May / June 2021 · Paper 22 · Question 4
5090
As printed in the paper
The question as text
Cardiopulmonary resuscitation (CPR) is a first aid procedure. Air is forced into a patient’s lungs by another person. The heart is made to pump blood by repeated compression of the patient’s chest over the heart. A person performing CPR on a patient is shown in the diagrams. repeated compression of chest air forced into lungs
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Show the answer and mark scheme
4(a)(i)[1]
4(a)(ii)[2]
4(a)(iii)[2]
4(b)[4]
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