Heart with two atria but one ventricle (both oxygenated and deoxygenated blood are mixed) "Double Circulation"

Heart with two atria and two ventricle (Oxygenated and deoxygenated blood are separated) "Double Circulation"

The blood from the body, which is low in oxygen enters the atrium via the __________

The final tube in heart's fish connected to ventral aorta.

A part of Amphibian heart that directs oxygen blood entering ventricle from left atrium.

Part of Amphibian heart that is also called bulbous cords.

A smooth muscle in heart that is responsible for swelling of ventral aorta.

A kind of Amphibian that has partially divided circulation.

An animal heart that is fully divided circulation, but additional chamber (as in turtle).

Have four chambered hearts and two separate circulatory loops.