Comparison of some pulmonary morphometric parameters of the Andean goose (Chloephaga melanoptera) with those of other species of birds.

BM, body mass; τht, harmonic mean thickness of the blood-gas (tissue) barrier; VL.BM-1, volume of the lung per unit body mass; V(PCB).BM-1, volume of the pulmonary capillary blood per unit body mass; V(PCB).S(t)-1, volume of the pulmonary capillary blood per unit surface area of the blood-gas tissue barrier; S(t).BM-1, surface area of the blood-gas (tissue) barrier per unit body mass; S(t).V(LP)-1, surface area of the blood-gas (tissue) barrier per unit volume of the lung parenchyma; DLo2.kg-1, total (overall) morphometric pulmonary diffusing capacity of the lung per unit body mass.