Human Fetus at 29 Weeks in the Womb (Brown Skin)

Description

A fetus of about 29 weeks lies in a flexed, head-down curled posture inside the amniotic sac, seen from the left side. The rounded cranium carries a fine covering of scalp hair, the external ear is fully modelled with a defined helix and lobule, and the eyelids are closed over eyes that at this stage are capable of opening. One hand rests against the cheek while the other lies against the chest, and the lower limbs are strongly flexed at the hips and knees with the soles and toes turned inward. The translucent amniotic membrane and the surrounding amniotic fluid separate the fetus from the muscular uterine wall, while the umbilical cord and the vascular face of the placenta are visible in the background, dimmed by fluid and membrane. By the third trimester the fetus is accumulating subcutaneous fat, so the skin appears smoother and less wrinkled than in earlier weeks, and the body outline is more rounded. Week 29 falls within the period of rapid brain growth, active lung surfactant production, and coordinated fetal movement and breathing motions, all of which underpin improving survival with neonatal intensive care after preterm birth. The image reflects the anatomy assessed in routine third-trimester obstetric ultrasound: fetal lie and presentation, limb flexion tone, amniotic fluid volume, cord position and placental appearance, each relevant to growth surveillance and delivery planning. The rendering suits obstetric and midwifery teaching sequences that follow gestational development week by week, antenatal class handouts, and patient-facing material explaining what happens during the third trimester. It also serves textbook and atlas figures on fetal growth and positioning, hospital and clinic waiting-room displays, and editorial or app content for expectant parents, and pairs directly with the earlier weeks in this series for side-by-side comparison. Anatomical accuracy verified by SciePro's Medical Advisory Board.