What are the Different types of circulation?
There are two main types of the closed circulation system: single circulation and double circulation.
(i) Single circulation
- Cold-blooded organisms like fish have two chambers in their
Two-chambered heart
- The oxygenated blood travels from the Gill capillaries to the body cells and the deoxygenated blood goes into the heart and is pumped with force towards the
- This type of circulation is referred to as single
Single Circulation
- Double circulation
Organisms that have a three-chambered or four-chambered heart undergo double circulation.
● Organisms with a three-chambered heart
Cold-blooded organisms like reptiles have three chambers in their heart: two atria and one ventricle.
Three-chambered heart
The oxygenated and deoxygenated blood gets mixed in the heart. The blood is circulated twice in the heart and hence, the circulation is known as double circulation.
Double circulation in the three-chambered heart
- Organisms with a four-chambered heart
Warm-blooded organisms like human beings have a four-chambered heart: Two atria and two ventricles.
Human heart
There is no mixing of oxygenated and deoxygenated blood. The blood is circulated twice in the heart and thus, this type of circulation is known as double circulation.
Double circulation in the four-chambered heart