Homology of lungs and gas bladders: Insights from arterial vasculature

@article{Longo2013HomologyOL,
  title={Homology of lungs and gas bladders: Insights from arterial vasculature},
  author={Sarah Longo and Mark L. Riccio and Amy R McCune},
  journal={Journal of Morphology},
  year={2013},
  volume={274}
}
Gas bladders of ray‐finned fishes serve a variety of vital functions and are thus an important novelty of most living vertebrates. The gas bladder has long been regarded as an evolutionary modification of lungs. Critical evidence for this hypothesized homology is whether pulmonary arteries supply the gas bladder as well as the lungs. Pulmonary arteries, paired branches of the fourth efferent branchial arteries, deliver blood to the lungs in osteichthyans with functional lungs (lungfishes… 
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