... Lungs Heart National Science Foundation http://dx.doi.org/10.13039/100000001 2103499 Office of Naval Research http://dx.doi.org/10.13039/100000006 N000142112652 N000142012642 Natural Sciences and Engineering Research Council of Canada http://dx.doi.org/10.13039...

... to transition physiologically from conforming passively to ambient oxygen levels to actively regulating their blood oxygen. However, it is unknown whether these mechanical and physiological breathing transitions are temporally or functionally linked, or how both transitions relate to lung maturation and gas...

... tension, in which a bubble is drawn into the buccal cavity and compressed into the lungs. In most tadpoles, bubble-sucking is replaced by breach breathing (breaking the surface to access air) at larger body sizes. In contrast, H. versicolor tadpoles bubble-suck throughout the larval period, despite...

... and A. olivaceus . Tadarida brasiliensis had lower resting oxygen consumption, but higher maximum oxygen consumption and aerobic scope, than the rodents. The blood–gas barrier of the bat was thinner and its relative lung size was larger; however,alveolar surface density was similar among the three species...

...C. G. Farmer; D. C. Jackson ABSTRACT Many osteichthyan fishes obtain oxygen from both air, using a lung, and water, using gills. Although it is commonly thought that fishes air-breathe to survive hypoxic aquatic habitats, other reasons may be more important in many species. This study...

... capillaries. Previous studies have shown that lung atrial natriuretic factor (ANF) may have an important physiological function in preventing edema in mammals. In this study, we report the presence of the complete ANF system in the lungs of the toad Bufo paracnemis . Radioimmunoassay of tissue homogenates...

...Caroline A. Farrelly; Peter Greenaway ABSTRACT Lung and gill performance in gas exchange have been evaluated in eight species of air-breathing crabs with two different lung circulatory designs, those with portal systems and smooth lung linings, and those without portal systems and with invaginated...

...P. Greenaway; S. Morris; B. R. Mcmahon ABSTRACT The lungs are responsible for essentially all uptake of oxygen in Birgus latro . Elimination of CO 2 in resting crabs appears to occur largely across the gills but during exercise approximately half the output of CO 2 is pulmonary. was high in resting...

...Steven F. Perry ABSTRACT The complex, multicameral lungs of the Nile crocodile are characterized by rows of tubular chambers, which in cranial and ventral lung regions are broad and sac-like. The inner surface of the chambers is enhanced by cubicles (ediculae), the capillary-bearing walls of which...