Fish with 2 chambered heart Atrium and ventricles Atrium : receive blood from body Ventricles : pump the blood out of heart to gill. Oxygen rich blood travel from gill to the rest of body and returns, oxygen poor to atrium
Fish with 2 chambered heart Atrium and ventricles Atrium : receive blood from body Ventricles : pump the blood out of heart to gill. Oxygen rich blood travel from gill to the rest of body and returns, oxygen poor to atrium