Which of the Following Statements Concerning the Embryonic Circulatory System

question 96

Multiple Choice

Which of the following statements concerning the embryonic circulatory system is true?

• A)The heart develops from four endothelial tubes.
• B)Blood vessels form from blood islands.
• C)An opening in the interatrial septum is called the sinus venosus.
• D)The bulbus cordis becomes the sinoatrial node (the adult pacemaker).
• E)There is an opening in the interventricular septum.

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