Question

What do you mean by double circulation what is its significance?

Answer 1

IN DOUBLE CIRCULATION THE BLOOD FLOWS TWICE FROM THE HEART
MORE PRECISELY,
THE BLOOD ENTERS THE HEART FROM THE RIGHT AURICLE AND GOES FROM THERE TO THE RIGHT VENTRICLE
THE RIGHT VENTRICLE PUMPS IT TO THE HEART
THIS IS THE 1ST CIRCULATION
SECONDLY,THE BLOOD COMES BACK TO THE HEART TO THE LEFT VENTRICLE AND GOES TO THE LEFT VENTRICLE
FROM HERE THE BLOOD IS PUMPED TO THE WHOLE BODY
THIS IS THE 2ND CIRCULATION

THIS WAY BLOOD ENTERS AND LEAVES THE HEART TWICE

THIS IS DOUBLE CIRCULATION

HOPE IT HELPS ☺️

Answer 2

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It is called a double circulatory system because blood passes through the heart twice per circuit. The right pump sends deoxygenated blood to the lungs where it becomes oxygenated and returns back to the heart. The left pump sends the newly oxygenated blood around the body.