given below is the simplified pathway of the circulatory system of man...???... answer the all questions...
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a q1 1 pulmonary vein
3 hepatic portal vein 6 hepatic vein 7 posterior vena cava
q2 coronary arteries
q3 draw the fig of an artery
q4 artery (4) vein(5)
wall thick and more wall thin and less muscular
muscular
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