Human Fetus in the Womb at 40 Weeks (Brown Skin)

Description

A full-term fetus at 40 weeks of gestation lies curled within the uterine cavity, enclosed by the translucent amniotic sac membrane and surrounded by the vascularised uterine wall. The body is in the classic flexed attitude: spine curved, thighs drawn toward the abdomen, arms folded in front of the chest with the hands near the face, and the toes visible against the trunk. Surface features characteristic of term maturity are present, including a rounded head with dense scalp hair, a well-formed auricle, plump subcutaneous fat over the limbs, and a clearly defined umbilicus. The coiled umbilical cord leaves the abdominal wall and runs to the fetal surface of the placenta, where the two umbilical arteries and single umbilical vein are distinguished by colour, and the chorionic plate vessels radiate across the placental disc. At 40 weeks the fetus has reached term, and this configuration illustrates the anatomical basis of late pregnancy assessment: fetal lie and presentation, engagement of the head in the maternal pelvis, cord position relative to the fetal neck and limbs, and the site of placental implantation on the uterine wall. The visible relationship between cord insertion and placental disc is central to discussions of cord coiling, nuchal cord, velamentous insertion and placental location, all of which are evaluated by ultrasound before delivery. The image also supports explanation of amniotic fluid volume, fetal movement in a confined cavity, and the physiology of umbilical circulation that ceases at birth. Suited to obstetric and midwifery teaching, antenatal class handouts, prenatal development atlases and reference series showing gestation week by week, this rendering also serves patient-facing material explaining what to expect at term. Publishers, hospital communication teams and medical device companies working in obstetric ultrasound and delivery care will find it a clear anchor figure. Anatomical accuracy verified by SciePro's Medical Advisory Board.