Q:

Which are true. regarding the fate of embryonic cardiovascular structures:

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Which are true. regarding the fate of embryonic cardiovascular structures:


  1. the lower portion of the left valve of the sinus venosus contributes to the right atrioventricular (tricuspid) valve
  2. a portion of the right valve of the sinus venosus becomes the valve of the inferior vena cava
  3. both A and B
  4. neither A nor B

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B. a portion of the right valve of the sinus venosus becomes the valve of the inferior vena cava

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