Anatomical Presentation Of The Human Placenta

Description

Placenta and umbilical cord dominate the frame on the fetal surface, with the cord inserting near the center of the chorionic plate and the amnion draping smoothly over it. Two umbilical arteries and a single umbilical vein are implied at the cord root, where they fan into branching chorionic vessels that radiate centrifugally toward the placental margin. Arterial branches typically course superficially and cross over veins, creating a map-like pattern on the glistening fetal surface. Vascular arborization and the peripheral edge help orient right-left and superior-inferior relationships within the disc without needing a maternal landmark. Cord insertion site matters clinically. Eccentric or marginal insertion can accompany fetal growth restriction, and velamentous insertion raises concern for vasa previa when unprotected fetal vessels traverse the membranes near the internal cervical os. This illustration is also useful for explaining why fetomaternal exchange occurs in terminal villi within the chorion frondosum while maternal blood enters the intervillous space via spiral arteries, even though the maternal basal plate and cotyledons are not the featured surface. Light specular highlights along the amnion and vessel walls make the chorionic vascular tree easy to track from proximal trunk to distal branches. A surgical and pathology reference. Obstetrics and gynecology teaching modules can pair this image with Doppler ultrasound concepts to reinforce normal umbilical artery flow and placental perfusion territories. Medical publishers and placental pathology services can place the illustration beside gross examination checklists, cord insertion diagrams, and reports addressing abruption, infarction patterns, or suspected chorangioma distribution across chorionic vessels. Anatomical accuracy verified by SciePro's Medical Advisory Board.