Human Fetus at 39 Weeks in the Womb (Asian Skin)

Description

At 39 weeks of gestation the fetus is depicted in the classic flexed attitude, occupying nearly the whole uterine cavity with the head directed inferiorly in cephalic presentation. Subcutaneous fat has smoothed the body contours, the scalp carries dense pigmented hair, and the external ear, digits of the hand and the toes of the flexed lower limbs are fully formed. The umbilical cord, showing the spiral course of its two umbilical arteries and single umbilical vein, loops across the thighs and feet before inserting into the discoid placenta seen behind the fetal trunk. The placenta lies flush against the vascularised uterine wall, its fetal surface marked by radiating chorionic vessels. Week 39 is early term to full term, the point at which pulmonary surfactant production, thermoregulation and suck-swallow coordination are mature enough for extrauterine life. The depicted longitudinal lie with a flexed vertex is the presentation assessed clinically by Leopold manoeuvres and confirmed on ultrasound before labour, and the cord looping around the limbs illustrates the entanglement patterns that may be reported antenatally. The relationship of placental site to the uterine wall is the anatomy underlying discussion of placental position, cord insertion, and third-stage separation after delivery. This rendering supports obstetric and midwifery teaching on fetal lie, presentation and term maturity, and complements earlier images in the same second-trimester series for showing growth across gestation. It suits antenatal patient education about the final weeks of pregnancy, childbirth preparation classes, textbook and journal figures on placental and cord anatomy, and editorial or app content produced by publishers and healthcare communication agencies. Anatomical accuracy verified by SciePro's Medical Advisory Board.