 
<translate> Iji zaa ajụjụ ahụ dị n'elu, ahịrịokwu ahụ dị mkpa bụ: Ọ na-eme ka ihe dị ka 55% nke mkpokọta ọbara nke ahụ. Ya mere, azịza ikpeazụ bụ ihe dịka 55%. <eng> To answer the above question, the relevant sentence is: It makes up about 55 % of the body's total blood volume.
So, the final answer is about 55 %. 