Human Fetus at 38 Weeks in the Womb (Caucasian Skin)

Description

At 38 weeks of gestation the fetus fills nearly the whole uterine cavity, shown here in a flexed vertex attitude with the head to the left, chin tucked toward the chest and one hand raised to the face. The amniotic sac is rendered translucent so the surrounding amniotic fluid, now relatively reduced in proportion to fetal volume, can be read against the smooth inner surface of the sac. The umbilical cord emerges from the abdomen and loops between the flexed thighs and lower legs toward the placenta, seen as a thickened discoid plate along the upper right uterine wall. Surface detail includes fine scalp hair, the well-formed auricle of the ear, plump subcutaneous fat over the limbs, and distinct fingers and toes, while branching uterine blood vessels run across the myometrium and endometrium behind the sac. Week 38 is within the early-term to full-term window, and this anatomy underlies the standard third-trimester obstetric assessment: fetal presentation and lie, engagement of the head in the pelvic inlet, placental position and grade, and amniotic fluid volume. The depicted cephalic presentation with a flexed head is the configuration associated with the most favourable diameters for vaginal delivery, and the cord looping around the lower limbs illustrates why cord position is noted at scan and monitored during labour. The placental site on the upper uterine wall corresponds to a normal, non-praevia implantation relevant to delivery planning. The image suits antenatal education handouts, midwifery and obstetric nursing curricula, textbook and atlas figures on the third trimester, and app or website content tracking pregnancy week by week. It also serves ultrasound training material as an anatomical reference alongside sonographic images, and gives clinicians a clear visual aid when explaining presentation, cord and placenta to expectant parents. Anatomical accuracy verified by SciePro's Medical Advisory Board.