Pathology Outlines - Accessory lobe / bilobate placenta
2011年9月1日 · Also called succenturiate lobe Due to focal noninvolution of chorionic laevae Gross description: main placental disc is attached to a smaller portion of placenta by fetal vessels and membranes
Pathology Outlines - Anatomy & histology-placenta & umbilical …
2023年9月5日 · Oval to circular in shape and devoid any accessory or succenturiate lobes Composed of fetal portion (chorionic plate) and maternal portion (basal plate) Weight of the trimmed disc is one of the critical measurements of placentas Placental weight and fetoplacental ratio should be compared with values expected for gestational age
Pathology Outlines - Placenta
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Marginal insertion - Pathology Outlines
2015年11月1日 · Developing placental disc demonstrates migrational tropism towards the uterine vascular supply When the uterine vascular supply is asymmetric, the disc will migrate in relation to the relatively stationary umbilical cord, resulting in a …
Pathology Outlines - Placental development & hormones
2011年9月1日 · Steroid hormones: estrogens and progesterone. Trophoblasts synthesize estrogens and syncytiotrophoblasts synthesize progesterone, which maintains a noncontractile uterus and fosters development of an endometrium conducive to pregnancy