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biology 0610printed 118 · PDF 118
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Aitchison College Academic Resources.
The diagrams show four different stages in one heart beat.
ER. ES
ER
key
direction in which
—
blood is moving
nN
So
What is the correct order for the stages after stage P?
A
B
c
D
Q>R>S
R>-Q->S
R>S>Q
S>R-Q
Where does haemoglobin become oxyhaemoglobin?
oo DW
heart
kidneys
liver
lungs
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