A-level Biology Notes

Structure of trachea/bronchi?

-wall made of c shaped cartilage

-Cartilage is strong so trachea/bronchi do not collapse 

-Cartilage is c shaped to give flexibility 

-Lining made of goblet cells and ciliated epithelial cells 

-Goblet cells make mucus, which traps pathogens /particles

-Cilliated epithelial cells have cilia, which pushes mucus up and out of lungs