A-LevelBiologyGas exchange9700/12 · Oct/Nov 2013 · Q321 Mark
Which tissues are present in a bronchus? [Figure 32.1]
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Acartilage: ✓, ciliated epithelium: ✓, smooth muscle: ✓
Bcartilage: ✓, ciliated epithelium: ✓, smooth muscle: ✗
Ccartilage: ✓, ciliated epithelium: ✗, smooth muscle: ✓
Dcartilage: ✗, ciliated epithelium: ✓, smooth muscle: ✓
✓ Correct answer
A: cartilage: ✓, ciliated epithelium: ✓, smooth muscle: ✓
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