cardiovascular System
Like most animals, the bullfrog has a closed cardiovascular system as well. However, as amphibians, these frogs actually are old-blooded instead of warm blooded. The cardiovascular system of a bullfrog includes a 3 chambered heart, and 2 major arteries known as truncus arteriosus and conus arteriosus. of the heart's chambers, two are receiving chambers known as atria, and the third is a seeding chamber known as a ventricle. Blood from the frog's body goes through veins and into the atria chambers, where it enters the ventricle. The ventricle then pumps out the blood through arteries away from the heart.