The photomicrograph shows the wall of a bronchus viewed using a light microscope. Which row correctly names the structures labelled?
- AX: epithelium; Y: elastic fibres; Z: bronchiole
- BX: endothelium; Y: smooth muscle; Z: bronchiole
- CX: epithelium; Y: smooth muscle; Z: blood vessel
- DX: endothelium; Y: elastic fibres; Z: blood vessel