The diagram illustrates sections of the human gas exchange system together with the cells or structures linked to them. Parts: alveolus, bronchiole, bronchus, trachea. Cells or structures: ciliated cells, squamous epithelial cells, C-shaped rings of cartilage, ciliated cells and goblet cells. Which diagram shows the connections that correctly pair the parts with their cells or structures?
Biology 9700 · AS & A Level · Cells as the basic units of living organisms