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Q.

Find the incorrect pairing.

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a

SAN – Natural pacemaker

b

Heart rate – pulse rate

c

Cardiac output – Heart rate x Stroke volume

d

Heart failure – Heart attack

answer is D.

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Detailed Solution

Heart failure means the state of heart when it is not pumping blood effectively enough to meet the needs of the body.

Heart attack is when the heart muscle is suddenly damaged by an inadequate blood supply.

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