The labelled points, 1 and 2, on the graph indicate two different kinds of structure in a human breathing system. Which row shows a structure connected to alveoli and a structure that contains cartilage?
- Aattached to alveoli 1, containing cartilage 1
- Battached to alveoli 1, containing cartilage 2
- Cattached to alveoli 2, containing cartilage 1
- Dattached to alveoli 2, containing cartilage 2