<prompt> Human placenta is:HemochorialEndothen - esdothelimaChorio - endothelialNon-Discoidal  <response>: Ans-A Hemochorial Ref: DC Duttas Textbook of Obstetrics, 7th edn, pg 28Explanation:Human placentaStarts developing at 6 weeks and completed by 12 weeksHuman placenta is discoid, hemochorial, deciduateDevelopment of placentaFetal part - chorion frondosumMaternal part - deciduas hasalisCleavage of placenta following delivery occurs through deciduas spongiosumNormal weight - 500 gmsFunctional unit of placenta - chorionic villiUmbilical artery has 2 arteries and one veinNitabuchs membrane is absent in placenta accretaBlood flow in feto placental unit at term 500 ml minOxygen saturation inUmbilical vein -70-80 Umbilical artery - 50 -60 Intervillous space is filled with maternal bloodVolume of blood in mature placenta - 500 ml 