Human Fetus at 40 Weeks in the Womb (Black Skin)

Description

A fetus at 40 weeks of gestation lies within the amniotic cavity, shown in the flexed attitude typical of term: the vertex directed inferiorly, chin tucked toward the chest, hips and knees drawn up, and one foot crossing in front of the opposite thigh. Surface detail includes scalp hair, a well-formed auricle with defined helix and antihelix, plump subcutaneous fat over the trunk and limbs, and fully separated fingers and toes with nails reaching the fingertips. The umbilical cord emerges from the abdominal wall and spirals upward, its two umbilical arteries and single vein visible through the translucent cord surface, inserting into the disc-shaped placenta seated against the uterine wall behind the fetus. Fine vessels branching through the surrounding myometrium and decidua frame the scene. Week 40 represents completion of intrauterine growth, with fetal lungs, thermoregulation and suck-swallow coordination mature enough for extrauterine life. This depiction shows the cephalic presentation and flexed attitude that make vaginal delivery mechanically favourable, and provides a reference point for discussing malpresentation, cord length and coiling, nuchal cord, and placental site. The cord and placental relationship illustrated here is the anatomy behind Doppler assessment of umbilical artery flow, amniotic fluid volume estimation, and the third stage of labour, when placental separation from the uterine wall must be complete. The image suits obstetrics and midwifery teaching on fetal presentation and term anatomy, antenatal class handouts and pregnancy apps, and patient-facing material explaining what to expect at full term. It also works as a figure in embryology and obstetric atlases, in week-by-week pregnancy series for publishers, and in ultrasound training resources where a realistic anatomical counterpart helps interpret sonographic planes. Anatomical accuracy verified by SciePro's Medical Advisory Board.