Closed Circulatory System

"Theoretically we have a closed circulatory system but is it completely closed?"

Answer

The circulatory system is defined as a system that allows the circulation of blood and lymph to transport nutrients (like amino acids and electrolytes), carbon dioxide, oxygen, blood cells, hormones, and etc. towards and away from the cells in the body for the purpose of nourishing and aid to fight against diseases, maintain homeostasis and for the stabilization of temperature and pH of the body (Sherwood, 2011). This system is considered as a blood distribution network, but according to few researchers circulatory system is a combination of ...