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

Description

A fetus of roughly 29 weeks' gestation lies in a flexed attitude within the amniotic cavity, head down and to the left, with the vertebral column describing the characteristic C-shaped fetal curvature. The limbs are drawn toward the trunk: the hands are held close to the face with individual fingers distinguishable, and one foot with clearly separated toes rests near the abdomen. Scalp hair covers the cranial vault, the auricle of the external ear is fully modelled, and the subcutaneous fat layer has begun to smooth the body contours typical of the third trimester. The umbilical cord emerges from the abdominal wall and spirals upward, its two umbilical arteries and single umbilical vein visible through the covering of Wharton's jelly, inserting into the discoid placenta attached to the uterine wall. Late second- and third-trimester anatomy of this kind underpins routine obstetric ultrasound assessment, where fetal lie and presentation, biometry, amniotic fluid volume, cord insertion and placental site are documented at each growth scan. The relationship shown between cord, placenta and uterine wall is the reference point for identifying placenta praevia, marginal or velamentous cord insertion, and for interpreting Doppler studies of umbilical artery flow in suspected fetal growth restriction. At 29 weeks the fetus is viable but preterm, so the depicted stage is directly relevant to counselling on neonatal intensive care, surfactant maturity and antenatal corticosteroid timing. The rendering suits obstetrics and midwifery teaching modules on fetal development, antenatal class handouts and patient-facing material explaining what a baby looks like in the third trimester. Publishers of pregnancy atlases, prenatal screening literature and hospital information leaflets can use it alongside the earlier weeks in this series to build a continuous developmental sequence, while device and ultrasound companies may pair it with sonographic images for orientation. Anatomical accuracy verified by SciePro's Medical Advisory Board.