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biology 0610printed 153 · PDF 153
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4 Fig. 6.1 shows the movement of the ribs and the diaphragm during breathing in.
external
intercostal
muscles
sternum
vertebrae
N77
I
lai
ps
ss 7 wy
Sarz
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Fig. 6.1
(a) State what happens to the following structures during breathing in.
diaphragm
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