Question

3. What is the primary difference between a two, three and four chambered heart and what is the impact on the organism’s circulation?

Answer 1

In Two chambred heart there is one atrium and one ventricle so in this case the oxygenated and deoxygenated blood is not seprated and gets mixed during circulation example in this case is Fish. In case of three chambered heart there is   two atria and one ventricle and in this there is still mixing of blood but not much like in two chambered, blood flows in two areas some percentage of blood goes to lungs and some percentage goes to body e.g, many reptiles. and in four chambered heart there are two atria and two ventricles and oxygenated and deoxygenated blood is completely seprated.some bllod goes to lungs and some goes to body. e.g, birds and mammals.