Circulatory changes associated with the closure of the ductus arteriosus in hatching emu (Dromaius novaehollandiae).

  title={Circulatory changes associated with the closure of the ductus arteriosus in hatching emu (Dromaius novaehollandiae).},
  author={Lauren Shell and Warren W Burggren and David Muirhead and Thomas C. Nelson and Edward M Dzialowski},
  journal={Comparative biochemistry and physiology. Part A, Molecular & integrative physiology},
In developing avian embryos, the right and left ductus arteriosi (DA) allow for a shunt of systemic venous return away from the lungs to the body and chorioallantoic membrane (CAM). Unlike in mammals where the transition from placental respiration to lung respiration is instantaneous, in birds the transition from embryonic CAM respiration to lung respiration can take over 24h. To understand the physiological consequences of this long transition we examined circulatory changes and DA… CONTINUE READING
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