Posterior cardinal veins develop into:
AParts of inferior vena cava
BCommon iliac vein
CHemiazygos vein
DAzygos vein
All the following openings in the right atrium are guarded by a valve except
ASuperior vena cava
BInferior vena cava
CCoronary sinus
DAtrioventricular opening
Left anterior descending artery is a direct branch of
ARight coronary artery
BCircumflex artery
CLeft coronary artery
DAscending aorta
+ 7 more in the PDF
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