The subject is usually placedonanatomical position on a flat surface; there arefourpossible sites for inserting the perfusing cannula.Theseare both femoral and common carotidarteries.If blockage ofone of the arteries prevents asatisfactory flow of fluid into the body,thenthe other are tried in turn. If none of these sitesgivesa satisfactory flow, the body is unsuitable for perfusion.Inthiscasethelastresortisliberal intermuscular with embalming needlesand syringes. A line is drawn with skin pencilfromthe anterior superior iliac spine to the medialcondyleof thetibia,thisapproximatelythelineonthe underlying satorious muscle, a second lineisdrawn fromtheanteriorsuperioraspectofthesymphysis pubic, and this approximately overliestheinguinal ligament which is the lower boundaryofthe anterior front abdominal wall. Finallythemid-point ofthetwolinesarejoined3cmbelowinguinal ligament or a little above the center of thethirdline, anincision(out)about8cmlongmadethroughthe skinandunderlyingfattytissue,thecutisopened and searched for the femoral sheath byinsertingthe blunt pair of forceps. Then the femoralsheathis raised by inserting a scapular, a pair offorceps,the femoral sheath is opened, and the artery andveinare identified. The vein has relatively thinwallsand normallycontainsvalvesandbead-likebloodclots whichcanusuallybepalpated(felt)easily,the arteryhasmuchthickerwallswhichfeelsmoothif rolled between the finger and the thumb.