Question

What do you think would happen if the heart were made of voluntary muscles

Answer 1

It's not possible.. To survive... For us.   Because voluntary muscle Means the muscles which are in our control... And. ...we can't control the regular.. Beating of the heart.  

Answer 2

the voluntary muscles get easily fatigued because it consists white muscle fibre. and life wouldn't have been possible.. the heart would be under our control but at the same time when we would sleep we would die..