Given below are four statement regarding human blood vascular system
(a) there is no role of calicum ions in blood clotting
(b)cardiac output is the amount of blood pumped by each ventricle in one second
(c )arteries are thin walled and have narrow lumen ass compared to veins
(4)the stage of cardiac cycle where all the four chambers are relexed stage is called joint Diastole
How many of the above statement are correct ?