ANATOMY

Detailed explanation-1: -The left ventricle has the thickest wall out of all the chambers. The left ventricle is responsible for pumping the blood towards the tissues of the heart.

Detailed explanation-2: -The left ventricle is the strongest because it has to pump blood out to the entire body. When your heart functions normally, all four chambers work together in a continuous and coordinated effort to keep oxygen-rich blood circulating throughout your body.

Detailed explanation-3: -The myocardium of the left ventricle, which must drive blood out into the systemic circulation, is, therefore, thickest; the myocardium of the right ventricle, which propels blood to the lungs, is moderately thickened, while the atrial walls are relatively thin.

Detailed explanation-4: -The muscles of the heart, termed the myocardium, make up the middle and thickest layer of the heart wall.

Detailed explanation-5: -The order of thickness of the heart wall from thin to thick is auricles, right ventricle and left ventricle.