Pregnant Woman at 31 Weeks of Gestation, Lateral View (Black Skin)

Description

Seen from the side with the maternal abdominal wall rendered transparent, this image shows a singleton fetus at approximately 31 weeks of gestation lying in cephalic presentation within the amniotic cavity. The fetal head rests in the lower uterine segment above the pelvic inlet, the spine curves along the maternal anterior abdominal wall, and the limbs are flexed against the trunk in the characteristic attitude of the third trimester. The umbilical cord loops from the anteriorly implanted placenta to the fetal abdomen, while the enlarged uterus displaces the small and large intestine superiorly and posteriorly and compresses the urinary bladder anteroinferiorly. Pelvic bones, maternal breast and the supporting hand placed on the fundus complete the lateral silhouette. Week 31 falls in the period when fetal lung maturation, subcutaneous fat deposition and weight gain accelerate, and when presentation becomes clinically meaningful for planning delivery. The lateral projection makes fundal height, the relationship of the fetal head to the maternal pelvis, and the degree of visceral and bladder displacement immediately legible, which underlies common third-trimester complaints such as urinary frequency, reflux, dyspnoea and low back pain. Placental position relative to the internal os, cord course and amniotic fluid volume are the same parameters assessed at routine third-trimester ultrasound and Leopold manoeuvres. The illustration suits obstetric and midwifery teaching sequences that track gestation week by week, antenatal class handouts, and patient education material explaining fetal position and maternal changes in late pregnancy. It also serves textbook and journal figures on fetal growth, and marketing or app content for maternity services, prenatal imaging and women's health products requiring an anatomically consistent lateral reference. Anatomical accuracy verified by SciePro's Medical Advisory Board.