what parts of the heart are different sizes and why What mak

Solution

Atria ,and ventricles of heart ,,,,vary in thickness due to myocardial layer .it is useful for pumping blood throughout the body.

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explanation

Myocardium.
It is the strong muscular middle layer of the heart .
It makes up most of the thickness and mass of the heart wall.
It is the part of the heart in charge of pumping blood.
Beneath the myocardium is the thin endocardium layer is present.

The thickness of the heart cell fluctuates in various parts of the heart.
The atria of the heart have a thin myocardium since they don\'t have to pump blood extremely far—just to the adjacent ventricles.

The ventricles, then again, have a thick myocardium to pump blood to the lungs or all through the whole body. The correct side of the heart has less myocardium in its wall than the left side in light of the fact that the left side needs to pump blood through the whole body while the correct side just needs to pump to the lungs.

The atria are littler than the ventricles and have more slender, less muscular wall than the ventricles