If you’ve lost blood, either by a severe cut or donating to a blood bank, your body can generate new blood to replace it. How does your body know when it needs more, and how does it know when to stop so you don’t end up with an excess amount?
In: Biology
Your body has methods of measuring the actual amount of liquid blood in the vessels, as well as how much oxygen your organs are getting. This is done through a combination of chemoreceptors and pressure receptors. If your body senses it’s low on RBCs, it can release a chemical called Erythropoietin, which causes your bone marrow to up the production of red blood cells, and then it stops releasing that chemical once it detects the amounts are back to normal
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