Fetus at Week 20 in the Uterus - Brown Skin

Description

Fetus at 20 weeks’ gestation lies in lateral profile within the gravid uterus, with the cranial vault and facial contour oriented toward the anterior uterine wall and the vertebral column coursing posteriorly. Placental tissue occupies a broad attachment along the uterine lining, and the umbilical cord extends from the fetal umbilicus toward the placental insertion, suspended within the amniotic cavity. The myometrium forms the outer muscular boundary of the uterine body, while the intrauterine compartment is defined by the gestational sac and surrounding decidua. Brown fetal skin tone is presented consistently across exposed surfaces. Week 20 sits in the second trimester window when obstetric anatomy surveys focus on fetal biometry, placental location, and cord insertion as practical determinants of risk and follow-up. Placenta previa and low-lying placenta are diagnosed by their relationship to the internal cervical os, and a lateral uterine perspective helps learners conceptualize how placental implantation site can encroach on the lower uterine segment even when the fetus itself appears normally positioned. Cord entanglement is not a diagnosis on static anatomy, but the cord’s course from abdomen to placenta supports teaching on velamentous insertion and vasa previa, where unprotected fetal vessels traverse membranes near the os. Placental anatomy matters here. Use this illustration for embryology and human development modules, obstetrics and gynecology teaching files, and patient-facing prenatal education materials that need accurate second-trimester relationships between fetus, placenta, umbilical cord, and uterus. It also fits atlases and manuscripts discussing placentation, uterine anatomy in pregnancy, and the clinical vocabulary of gestation. Anatomical accuracy verified by SciePro's Medical Advisory Board.