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 are four chambers in a human heart.
4 chambers as they are mammals.
A hippopotamus has a four-chambered heart.
It has 4 chambers in the human heart
10.
A lamprey has two heart chambers: one atrium and one ventricle. The blood flows in a single circuit through these chambers and is pumped through the body by the ventricle.
There are 4 chambers to the heart.
Their are 2 heart chambers.
A shark heart has two chambers.
The bird's heart has 4 chambers.
A sheep heart has four chambers.
There are 4 chambers in a bird's heart.
There are four chambers in a human heart.
there are four chambers!
A reindeer, being a mammal, has four heart chambers.
There's 4 heart chambers in a human, which is a mammle
The human heart has four chambers. The atria are the upper chambers, and the ventricles are the lower chambers.