Paavhareji murume mukuru pane anenge maquarts mashanu (4.75 litres) eropa, anoumbwa ne3 quarts (2.85 litres) eplasma uye 2 quarts (1.9 litres) yemasero.
Masero eropa akarembera muplasma, inoumbwa nemvura uye zvinhu zvakanyungudutswa, zvinosanganisira mahormone, masoja ekudzivirira chirwere, uye ma enzymes ari kutakurwa kuenda kumatishu, uye masero emarara emarara ari kuendeswa kumapapu neitsvo.
Masero makuru eropa anotsanangurwa semasero matsvuku (erythrocytes), masero machena (leukocytes), uye maplatelet (thrombocytes).
Masero matsvuku muviri wakatetepa, wakatenderera, wakakombama une hemoglobin, kemikari yakaoma kunzwisisa inotakura okisijeni necarbon dioxide.
Hemolysis inoitika apo ganda rakatetepa rinodzivirira iro rakavhara masero matsvuku asina kusimba rinotsemuka, zvichiita kuti hemoglobin ibude muplasma.Hemolysis inogona kukonzerwa nekubata kwakashata kwemuenzaniso weropa, kusiya tourniquet kwenguva yakareba (zvichikonzera ropa stasis) kana kudzvinya muromo wemunwe zvakanyanya panguva yekuunganidza capillary, dilution, kuratidzwa kune zvinosvibisa, kunyanyisa mukupisa, kana pathologic mamiriro.
