what is meant by coloumnae carnae

Dear Student,
Columnae carnae are the ridges like columns arising from the inner walls of the ventricles of the heart which help in proper pumping of the heart. As the ventricles of the heart are flat, there are high possibilities of formation of suction which in turn, can cause hindrance in the beating of heart. These columnae carnae prevent this suction thereby allowing smooth working of the heart.
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