Question

why the ventricular walls are thicker than artial walls ​

Answer 1

Answer is here:-

Ventricular have to pump blood into various organ and the pressure of the blood flowing in then is more than that of it in the articals, therefore,ventricular have thicker muscular wall than the articals.

Answer 2

QUESTION,

WHY ARE VENTRICULAR WALLS ARE THICKER THAN ARTIAL WALL??

SOLUTION,

VENTRICLES PUMP BLOOD TO ALMOST THE WHOLE BODY. SO,THEY NEED THICK AND MUSCULAR WALL TO PUMP BLOOD INTO AORTA UNDER PRESSURE. AURICLES PUSH BLOOD TO VENTRICLES ALONE AND NEED NOT TO APPLY MUCH PRESSURE.