atramencik

I'm not convinced... I've read somewhere,that their septum (or how is its name) between atriums is reduced... That's strange...

Thank you, but I know... - it is about all amphibians... (And I think (it is in my book), that the skin capillaries join not with the lung vein but with the main vein...) My problem is, how is the cardiovascular system of lungless amphibians like. And one more thing - I mean, the fishes have got Single Loop Circulation, almost all of Amphibians have Double Loop Circulation. And the lungless?

I'd like to know, how is the circulatory system of lungless amphibias like. Perhaps anybody knows or could give me an adress of website, where I can find it? Almost all of the amphibians have got three circulations - the big, the small (lungs) and the skin-circulation. Thanks to that, the blood, which flows to all of the tissues, bring the oxygen. The third circulation begins with the small circulation (the lung-artery) and finishes with the big (the main vein). But the lungless amphibians haven't got lungs, so, I think, they haven't also the small circulation (or it is reduced, I don't know). How do they it, I mean, how the blood without oxygen flows to the skin and then, already with oxygen, through the heart, flows to the tissues? How is the heart like? How many circulations have they? Please, help me