Match the definition up with the area of the lungs
A pair of lobed structures made up of highly branched tubules called bronchioles which end in tiny air sacs called alveoli.

Match the definition with the structure
A flexible airway that is supported by rings of cartilage preventing them from collapsing. They are lined with ciliated epithelium and goblet cells.

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Produces mucus to trap dirt particles and have cilia to move dirt

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Branching subdivision that is lined with epithelial cells. Muscles allow them to constrict the flow of air into the alveoli

Match the definition with the structure
Minute air sacs at the end of the bronchioles that are lined with epithelium, collagen and elastic fibres allowing them to stretch during inhalation.