Question

why are the walls of the ventricles thicker than the walls of the auricles?

Answer 1

because auricles carry first blood and ventricle second

Answer 2

Answer:

walls of ventricle are thicker than walls of auricle because ventricle has to supply or pump blood to the whole body that's why it is necessary to have thicker wall of ventricle than auricle

thickness ..

LV>RV>LA>RA..