Human Fetus in the Womb at 27 Weeks (Black Skin)

Description

A fetus at approximately 27 weeks of gestation lies in a flexed, head-down curled attitude within the amniotic cavity, seen from the left side with the face turned toward the viewer. The head is large in proportion to the trunk, with fine scalp hair, closed eyelids, a formed external ear and pinna, and a rounded forehead over a still-thin subcutaneous fat layer. The lower limbs are drawn up across the abdomen so that the plantar surface, heel and toes face forward, while a hand rests near the chest. A twisted umbilical cord passes from the umbilicus toward the fetal surface of the placenta, its two umbilical arteries coiling around the single umbilical vein and its chorionic vessels radiating across the disc against the surrounding uterine wall. Week 27 marks the transition into the third trimester, when alveolar development and surfactant production advance, brown adipose tissue accumulates, and the eyelids unfuse, so this stage is central to counselling on the viability threshold and on the outcomes of extremely preterm delivery. The rendering also shows the anatomy assessed on routine third-trimester ultrasound: fetal lie and presentation, placental position and cord insertion, amniotic fluid volume, and the three-vessel cord that is checked at the level of the bladder. The coiled cord illustrated here is the substrate for discussions of cord entanglement, nuchal cord and umbilical Doppler assessment in growth restriction. The image suits obstetric and midwifery teaching sequences that track a single pregnancy week by week, embryology and fetal development atlases, antenatal class handouts, and neonatology material on prematurity. It also serves patient-facing pregnancy apps, hospital information leaflets, and editorial or publication figures needing an accurate depiction of fetal position and placental attachment in the late second to early third trimester. Anatomical accuracy verified by SciePro's Medical Advisory Board.