Our circulatory system is a double circulatory system. This means it has two parts parts. Lungs Body cells the right side of the system deals with deoxygenated blood. the left side of the system deals with oxygenated blood. The Heart This is a vein. It brings blood from the body, except ...
Why do we need a transport system? We have a small surface area to volume ratio Simple diffusion throughout the body surfaces is insufficient Useful substances needs to transported through the body and unwanted substances needs to be eliminated What is the importance of the circulatory system? It...