Why does the left ventricle have a thicker myocardial wall?

There are two types of ventricles; the right and the left ventricles. The ventricles are large chambers located in the heart, which receive blood from atria. The major function of the ventricles is to pump blood throughout the body. In order to carry out their function of pumping blood very well, the ventricles have thicker myocardial wall compare to the atria. The thick myocardial walls allow blood to be pumped out of the heart at greater pressures.