MICROANATOMY

Detailed explanation-1: -The thickness of the myocardium varies between regions of the heart. In the absence of underlying pathology, the ventricles are always thicker than the atria.

Detailed explanation-2: -The ventricles are the bottom two chambers of the heart, one on the left and one on the right side. They are larger, thicker and contain more myocardium than the atria.

Detailed explanation-3: -Ventricles have thicker walls than atria because they have to do more work. Both atria act as receiving chambers for incoming blood and then pump the blood directly into the ventricles.

Detailed explanation-4: -Location and external features. The right ventricle is the smaller of the two lower chambers of the heart–it is only one-third of the thickness of its counterpart. In spite of the size disparity, the right ventricle still pumps the same volume of blood as the left ventricle.