What is the largest busiest and hardest working human organ?

Answer 1

the hardest working horse is a appolosa. the hardest working muscle in your body is the heart. it pumps loads of blood through your body every second!

Answer 2

the largest organ i think is the digestive system, as in the gut. but the busiest and most hard working orgas is the heart.....what else is going to keep you alive?

Answer 3

The heart.