PATHOLOGY

Detailed explanation-1: -The largest animal heart is the blue whale’s, which has been weighed at about 400 pounds (and it is not the size of a small car, contrary to popular belief).

Detailed explanation-2: -In fact, they have the biggest hearts on the planet. The heart of a blue whale weighs more than 1, 000 pounds, the weight of an average dairy cow. A blue whale heart pumps about 60 gallons of blood with each beat. In comparison, a human heart pumps merely 2.4 ounces with each beat.

Detailed explanation-3: -Cephalopods are also literally blue-blooded because they have copper in their blood. Human blood is red because of the iron in hemoglobin. “Just like rust is red, the iron in our hemoglobin is red when it’s oxygenated, ‘’ Vecchione said. But in cephalopods, oxygenated blood turns blue.

Detailed explanation-4: -Oxygen is pumped around its enormous body by an equally massive, four-chambered heart. Weighing some 900kg – and the size of a Mini car – the blue whale’s heart beats once every 10 seconds, pumping 220 litres of blood through its body, and beats so loudly it can be heard from 3km away through sonar equipment.