More from Beauty pradhan

Page 2 :
INTRODUCTION:-, The human placenta is discoidal, because of its shape; hemochorial, because of direct contact of the chorion with the maternal blood and decidua., Development from chorion frondosum(fetal) and decidua basalis(maternal)., Development starts 6th week and completes on 12th wk., Diameter (15-20c.m), weight (500gm),cover (30%)., Placenta weight : baby weight =, 1 : 6

Page 4 :
STRUCTURE:-, Chorionic plate inner foetus side lined by amnion, cord attached in center., Basal plate outer mother side., Between both inter villous spaces(I.V.S) contain stem villi branches, lacunar space, trabeculae, blood., Stem villi rise to primary secondary and tertiary villi., Human placenta contains 60 stem villi, 3-4 in each cotyledon., Villi is a functional unit of placenta.

Page 6 :
SURFACE, MATERNAL, FETAL, MATERNAL:, ⅕ part, Rough and sponge, dull red color., 15-20 cotyledons., Limited by fissures.

Page 7 :
FETAL:, ⅘ part of placenta., Smooth and glistening amnion covers it., Umbilical cord attached in the center., Visible branches of vessels., Amnion peeled off and accepted insertion gray color in calcium deposition of cord sites., Maternal blood originates from it.

Page 10 :
FUNCTION:-, Respiratory: oxygen supply 8ml/kg/min., Excretory : urea, uric acid, creatinine., Nutritive : glucose, Lipids : cholesterol direct transfer to foetus., Hormones : insulin,

Page 12 :
ABNORMALITIES:-, Annular- ring shape., Bi-discoidal- 2 disc., Succenturiate- division of small part vessels contact., Spuria- separation of small parts, vessels not contact., Fenestrated- hole in disc., Circumvallate: central depression due to peripheral move of membrane.