The direction of blood flow in the heart is_______
A. Atrium → ventricle → artery
B. Artery → atrium → ventricle
C. Vein → Ventricle → Atrium
D. ventricle → atrium → vein
Answer:A
The direction of blood flow in the heart is_______
A. Atrium → ventricle → artery B. Artery → atrium → ventricle C. Vein → Ventricle → Atrium D. ventricle → atrium → vein