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The bloodstream is the blood that circulates the body in humans and animals. It helps to provide each cell with oxygen and nutrients, along with a way to dispose of waste produced by cellular metabolism that will eventually be filtered out the body through various processes. The transport of blood is facilitated by the cardiovascular system.

The bloodstream is important in allowing gas exchange to take place within the lungs as well as the transport across kidneys and cell membranes[1].The continuous movement of blood ensures that oxygen can diffuse from the lungs and bind to haemoglobin  that it can be transported to respiring tissues[2].


  1. Miller G. Fundamentals of Biomedical Transport Processes - Morgan and Claypool books [Internet]. 2010 [cited 5 December 2018].k
  2. Carlson B, Anderson J, Raymond G, Dash R, Bassingthwaighte J. Modeling Oxygen and Carbon Dioxide Transport and Exchange Using a Closed Loop Circulatory System. [Internet]. 2008 [cited 5 December 2018];:1. Available from:
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