abrow7933 abrow7933
  • 17-04-2018
  • Biology
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"artery" and "vein" are defined by whether they leave or enter the heart. if they were defined by whether they carried oxygenated or deoxygenated blood, we would have to change the name(s) of

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spookyowlet
spookyowlet spookyowlet
  • 19-04-2018
The pulmonary artery and vein.
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