Human Fetus at 22 Weeks in the Womb (Black Skin)

Description

The fetus lies in a flexed, curled posture within the intact amniotic sac, suspended in amniotic fluid and framed by the vascularised uterine wall and adjacent placental tissue. At approximately 22 weeks of gestation the head is large relative to the trunk, the auricle of the ear is well modelled against the skull, and the eyelids remain fused over the developing orbits. One hand is drawn up toward the mouth while the knees are flexed toward the abdomen, and the plantar surfaces and individual toes of the feet are clearly formed. The umbilical cord, showing its paired arteries and single vein as intertwined vessels, loops across the forehead and passes down toward the anterior abdominal wall, illustrating how freely the cord moves within the fluid-filled cavity. This stage sits at the threshold of viability and is the period covered by the mid-trimester anomaly scan, when biometry such as biparietal diameter, head and abdominal circumference and femur length is measured and compared with gestational age. The relationship between fetal presentation, cord position and amniotic fluid volume shown here underlies obstetric discussion of nuchal cord loops, cord entanglement and amniotic fluid index assessment. The visible placental attachment and uterine wall also support teaching on placental localisation, uteroplacental circulation and the interpretation of second-trimester ultrasound planes. The rendering suits obstetric and midwifery teaching sets, embryology and developmental anatomy lectures, and week-by-week pregnancy atlases where a consistent visual series is required. It works equally well in antenatal patient education leaflets and apps explaining fetal growth and movement to expectant parents, and as a publication or presentation figure for prenatal imaging and perinatal medicine. Anatomical accuracy verified by SciePro's Medical Advisory Board.