Amphibians have a three chambered heart.
Crocodiles are reptiles not amphibians.
Left atrium.
Reptiles and amphibians are the vertebrates that have three-chamber hearts.
The bloody kind
The first type of heart is the simple two chambered heart, which is found in fish. The second is the third chamber heart, which is found in amphibians and reptiles. Mammals and birds have four chambered hearts.
The heart of a lamprey looks similar to that of modern fish in a sense. It is a two chambered heart with a single atrium and a single ventricle. The atrium of the heart is proceeded by a sinus venosus, which isn't considered an actual chamber but rather pre-heart chamber. Then after the ventricle we have a conus arteriosus that again isn't considered to be a chamber of the heart but rather a post-heart chamber. The blood flow through the heart is a one way path like that of modern day fishes.
There is no such thing as a fiber chamber of the heart.
the amphibians have a three chambered heart whilst the fish have a two chambered heart.
Yes, an amphibian does have a heart.
Japanese amphibians
Amphibians have a three chambered heart, two atria and a single ventricle. Fish only have a two chambered heart and mammals have a four chambered heart.
Amphibians.