X1014021025-00217-45234</DOCNO> Healthy Heart part 1 A SIMPLE EXPLANATION OF A HEALTHY HUMAN HEART The human heart serves two basic functions: To deliver oxygen-poor blood (venous blood) to the lungs where the red blood cells absorb oxygen.
(The human heart; serves; two basic functions: To deliver oxygen-poor blood (venous blood) to the lungs) (the red blood cells; absorb; oxygen; L:the lungs)
The human heart the red blood cells
serves absorb
two basic functions: To deliver oxygen-poor blood (venous blood) to the lungs
oxygen L:the lungs