Human transport system consist of :
Heart, blood vessels and blood which transport:
gases such as O2 and CO2
Waste products such as CO2 and Urea
Functions of circulatory system are :
Transport O2 and nutrients to cells
Transport waste products away from cells
Protect body from infections
Erythrocytes (RBC):
- Biconwave disc which can move quickly in the blood capillaries
- Present in large numbers
- Plasma membrane is elastics
- Big TSA/V ration for exchange of respiratory gases
- No nucleus at the mature stage so more haemoglobin can be carried
- Produce by bone marrow
- Life-span is 120 days, destroyed in the liver of the lymph
Concept of the Circulatory System
bioslogossmkss 