Table 3: Anatomical comparison between the human and rabbit lung.

Anatomical structureHumanRabbitReference(s)

Respiratory bronchiolesPresentAbsent[13]
Tracheobronchial capillary bed7 capillaries/mm5 capillaries/mm[14, 15]
Branching patternMore symmetrical 25 generationsLess symmetrical 32 generations[1618]
Lung expansion rate26 folds20 folds[16, 17]
Mucus producing cellsSubmucosal glands and goblet cellsOnly goblet cells[19]