Human Fetus at 22 Weeks in the Uterus, Lateral View (Caucasian Skin)

Description

The maternal torso is shown in left lateral profile, the abdominal wall rendered semi-transparent so the gravid uterus occupies the lower abdomen and reaches above the level of the umbilicus. Within the amniotic cavity a fetus of approximately 22 weeks lies curled with the head directed inferiorly and rotated toward the viewer, limbs flexed against the trunk, and the umbilical cord passing from the ventral abdominal wall toward the placental disc on the uterine wall. Behind and below the uterus the maternal pelvis is visible in outline, with the sacrum posteriorly, the rectum and vagina in the midline, and the urinary bladder compressed anteriorly beneath the lower uterine segment. The exaggerated lumbar lordosis and forward shift of the maternal centre of gravity are evident in this profile. At 22 weeks the fetus is at the threshold of viability, making this a reference point for counselling, for anatomy survey ultrasound findings, and for discussions of extremely preterm birth. The lateral perspective demonstrates why the enlarging uterus reduces functional bladder capacity and produces urinary frequency, and how the anterior displacement of abdominal contents contributes to postural low back pain and pelvic girdle discomfort in the second trimester. Fundal height relative to the umbilicus, fetal lie and presentation, and placental position relative to the lower uterine segment are all assessable concepts in this single projection. Suited to obstetric and midwifery teaching sequences following gestation week by week, antenatal class handouts, patient-facing pregnancy apps and books, and editorial or publication figures on second-trimester fetal growth. Physiotherapists and prenatal exercise educators can use the same profile to explain postural change, while sonographers and medical students can relate the drawing to fetal lie and presentation terminology. Anatomical accuracy verified by SciePro's Medical Advisory Board.