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

Description

The fetus lies in a flexed attitude within the translucent amniotic sac, suspended in amniotic fluid, head turned toward the viewer and hands raised beside the face. Proportions typical of the early second trimester are evident: a comparatively large cranium with a smooth, hairless scalp, closed eyelids, a discernible external ear, and thin limbs with fully formed fingers and toes and visible plantar creases. The umbilical cord leaves the abdominal wall at the umbilicus and coils to the right, its spiralled umbilical vein and arteries distinguishable through the surrounding membrane. Behind the sac, the discoid placenta is applied to the vascularised uterine wall, its fetal surface traversed by chorionic vessels that converge toward the cord insertion. Twenty-two weeks sits at the threshold of viability, making this a reference point for counselling on periviable birth, antenatal corticosteroid timing and neonatal intensive care planning. The stage corresponds to detailed second-trimester ultrasound assessment, when biometry, amniotic fluid volume, cord vessel number and placental location and grade are documented; the rendering shows the same relationships a sonographer evaluates. Fetal position relative to the placenta and cord is also the anatomy underlying amniocentesis planning, cord entanglement discussions and the assessment of fetal movement reported by the mother at this gestation. The image supports obstetric and midwifery teaching sequences on trimester-by-trimester development, embryology and prenatal care textbooks, and antenatal class handouts where expectant parents benefit from seeing scale and posture rather than a schematic. It also serves prenatal screening leaflets, ultrasound training material used alongside sonographic images, and editorial or publication figures on fetal viability and placental function. As one frame in a gestational series, it aligns with earlier and later weeks for comparative timelines. Anatomical accuracy verified by SciePro's Medical Advisory Board.