Pregnant Woman at 40 Weeks, Lateral View (Asian Skin)

Description

Seen from the side with the maternal abdominal wall rendered transparent, this cutaway exposes the gravid uterus at 40 weeks of gestation occupying the abdominal cavity from the pelvic brim to the costal margin. The full-term fetus lies in a longitudinal cephalic presentation, spine curved anteriorly, limbs flexed against the trunk, with the vertex engaged below the level of the pubic symphysis and the occiput directed toward the maternal left. The umbilical cord loops between the fetal chest and the anterior uterine wall, and the thinned amniotic sac and myometrium can be traced around the fetal contour. Maternal landmarks include the compressed urinary bladder anteriorly, the rectum and sacrum posteriorly, the closed cervix at the lower uterine segment, the lumbar vertebrae, displaced intestinal loops beneath the ribs, and the enlarged breast. At term the relationship shown here governs obstetric assessment: engagement of the biparietal diameter within the pelvic inlet, fundal height near the xiphisternum, and the degree of bladder compression that accounts for urinary frequency in late pregnancy. The lateral projection clarifies the axis along which the presenting part must negotiate the inlet, mid-cavity and outlet during the cardinal movements of labour, and it explains lumbar lordosis, symphyseal strain and supine hypotension from caval compression. It also provides the spatial reference for Leopold manoeuvres, station assessment on vaginal examination, and cardiotocography transducer placement. The image suits obstetrics and midwifery lectures, antenatal class handouts and patient-facing material explaining what happens in the final weeks before labour. It also serves textbook and journal figures on fetal lie, presentation and engagement, and as an anchor image completing a week-by-week gestational series for publishers, health apps and clinical websites. Anatomical accuracy verified by SciePro's Medical Advisory Board.