Which chamber of the heart is the strongest muscle?

Left ventricle has the strongest muscles. This ventricle has to pump blood to entire body parts. The blood pressure in the systemic aorta is about 120/80 mm of mercury. This has to be maintained by this chamber. The right ventricle has to pump blood to the lungs only. The systolic blood pressure here is about 25 mm of mercury, much less as compared to systemic blood pressure. When you actually see the muscles of the heart of cadaver, you get the idea very clearly and without further questioning.