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?

Question

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

Answer 1

When you lose blood u can carry less oxygen you sense this in ur kidneys. The kidneys produce a hormone erythropoietin makes ur bone marrow make more blood when ur carrying capacity of oxygen is back to normal the hormone is set back to its normal lower level.