Biology · May / June 2025 · Paper 22 · Question 4
5090
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Fig. 4.1 shows a human bronchiole and some of the specialised cells from the inner layer that surrounds the lumen. cartilage lumen contains a layer of muscle tissue the bronchiole inner layer X Y Fig. 4.1
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4(a)(i)[3]
4(a)(ii)[2]
4(b)(i)[3]
4(b)(ii)[1]
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