Is there really less than 0.1 % oxygen in your blood?

Just randomly started thinking about this this morning…. how much oxygen is there in the entire human body…. as O2?

Turns out, NOT MUCH!
You have about 5L of blood. This is about 30 % by weight of hemoglobin. A hemoglobin monomer weights about 16000 and binds a single oxygen weighing 32. This means 1L of blood contains about 300g hemoglobin, binding about 0.6g of oxygen!
In your entire blood supply there is probably no more than 3.5g of oxygen. Thats a fine delicate wire to hang your entire life by!…. remember… the trick is to keep breathing!

Just a fun little calculation this morning so I wont be adding to the patreon feed. However if you like this stuff and want to support this channel directly:



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