capillary volume increases within the observed range of pressures neither by recruitment of collapsed capillaries nor by unfolding of pleats of alveolar septa and capillary walls , but rather by deformation and distension of tissue : scanning electron micrographs reveal a more conspicuous bulging of capillaries in zone iii than in zone ii lungs .
C1706784
alveolar septa
C0024109
lungs