Fetus at Week 7 in the Uterus - Black Skin

Description

Embryo at gestational week 7 occupies the uterine cavity in a lateral section that preserves the maternal-fetal interface. The curved uterine wall forms the outer boundary, with decidua lining the endometrium and a developing placenta (chorion frondosum) apposed to the fundal or upper uterine segment. A slender umbilical cord connects the embryo to the chorionic plate, while the amniotic sac envelops the embryo within the gestational sac, and the extraembryonic space (chorionic cavity) separates amnion from chorion where visible. Black fetal skin tone is presented for inclusive teaching and publication needs. Week 7 sits at a hinge point in embryology, when organogenesis and rapid cranio-caudal growth make orientation challenging for learners and when obstetric terminology often shifts between embryo and fetus in clinical documentation. The fixed lateral perspective helps clarify how chorionic villi and decidua relate spatially to the uterine wall, a relationship central to understanding early placentation, subchorionic hematoma location, and the anatomic basis of early pregnancy bleeding. Placental position and cord attachment also frame later discussions of abnormal implantation and placental insufficiency without forcing the viewer to mentally reconstruct 3D relationships from ultrasound alone. Small structures matter here. Use this illustration in preclinical embryology blocks, OB-GYN lectures on first-trimester development, and atlas plates that need an anatomically grounded overview of the uterus, placenta, and umbilical cord in early gestation. It also fits patient education materials explaining early pregnancy anatomy while maintaining professional anatomical terminology and a consistent Black skin phenotype. Anatomical accuracy verified by SciePro's Medical Advisory Board.