Rambiebambie02 Rambiebambie02
  • 01-11-2016
  • Biology
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what is the heart's curculation

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blacksheep blacksheep
  • 01-11-2016
Oxygen locks onto a molecule called hemoglobin in the red blood cells. The newly oxygenated blood leaves the lungs through the pulmonary veins and heads back to the heart. It enters the heart in the left atrium, then fills the left ventricle so it can be pumped into the systemic circulation.
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