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which of the following describes an aspect of fetal circulation that does not occur in adult circulation? both oxygenated and deoxygenated blood use the umbilical artery.
both oxygenated and deoxygenated blood use the umbilical vein.
oxygenated and deoxygenated blood mix due to the ductus arteriosus.
oxygenated and deoxygenated blood mix due to the ductus venosus.
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which of the following describes an aspect of fetal circulation that does not occur in adult circula...
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