. ▁The ▁density ▁of ▁blood ▁is ▁slightly ▁greater ▁than ▁the ▁density ▁of ▁water ▁at ▁approximately ▁ 1 0 6 0   ▁kg / m 3 . ▁The ▁increased ▁density ▁comes ▁from ▁the ▁increased ▁density ▁of ▁a ▁red ▁blood ▁cell ▁compared ▁with ▁the ▁density ▁of ▁water ▁or ▁pl asma . ▁ ▁R he ology ▁is ▁the ▁study ▁of ▁the ▁de formation ▁and ▁flow ▁of ▁matter . ▁Blood ▁R he ology ▁is ▁the ▁study ▁of ▁blood , ▁especially ▁the ▁properties ▁associated ▁with ▁the ▁de formation ▁and ▁flow ▁of ▁blood . ▁Blood ▁is ▁a ▁non - New ton ian ▁fluid . ▁However , ▁often ▁the ▁non - New ton ian ▁effect ▁is ▁very ▁small ▁due ▁to ▁various ▁reasons . ▁Thus , ▁it ▁is ▁important ▁to ▁know ▁about ▁the ▁blood ▁r he ology . ▁One ▁of ▁the ▁characteristics ▁of ▁blood ▁that ▁affect s ▁the ▁work ▁required ▁to ▁cause ▁the ▁blood ▁to ▁flow ▁through ▁the ▁ar ter ies ▁is ▁the ▁vis cos ity ▁of ▁blood . ▁The ▁vis cos ity ▁of ▁blood ▁is ▁in ▁the ▁range ▁of ▁ 3 ▁to ▁ 6 ▁c P , ▁or ▁ 0 . 0 0 3 ▁to ▁ 0 . 0 0 6 ▁N s / m 2 . ▁Blood ▁is ▁a ▁non - New ton ian ▁fluid , ▁which ▁means ▁that ▁the ▁vis cos ity ▁of ▁blood ▁is ▁not ▁a ▁constant ▁with ▁respect ▁to ▁the ▁rate ▁of ▁she aring ▁stra in . ▁In ▁addition ▁to ▁the ▁rate ▁of ▁she aring ▁stra in , ▁the ▁vis cos ity ▁of ▁blood ▁is ▁also