Abstract

Aim and objectives: The objective of this study is to determine the thickness difference
between the adult human heart's right and left ventricles, as well as their clinical importance
in the eastern Indian population, and compare it to the incidence in other races throughout the
world.
Introduction: Heart is a muscular motor that supplies blood to all parts of the body so that it
provides oxygen and nutrients to all the body parts. As we all know that this heart muscle
consists of four chambers viz., right atrium, right ventricle, left atrium and left ventricle. The
right ventricle receives from the right atrium and pumps the deoxygenated blood to the lungs.
The left ventricle directly pumps oxygenated blood to the rest of the body parts. The left
ventricle is usually narrower and longer than the right ventricle which extends from its base
of the atrio-ventricular groove to the cardiac apex. Moreover, the left ventricle walls are three
times thicker (8 – 12 mm) than those of the right ventricle which is relatively thin measuring
3 – 5 mm and the ration of the thickness between left to right ventricle is 3:1. There are four
borders of the heart. The right border is completely formed by the right atrium. The inferior
border is formed by the left & right ventricle. The left border is being formed by left ventricle
and little contribution from left atrium. Finally, the superior border is formed by right and left
atrium with the great vessels.