Pregnant Woman at Week 16 of Gestation, Lateral View (Asian Skin)

Description

The maternal torso is shown in profile with the abdominal wall rendered translucent so that the gravid uterus occupies the pelvis and lower abdomen. At approximately week 16 of gestation the fetus lies curled within the amniotic sac, head flexed toward the chest, with recognisable limb buds developed into arms and legs and the umbilical cord looping from the abdomen toward the placental disc on the uterine wall. Behind and below the uterus the sacrum and pelvic bone frame the posterior pelvis, while the urinary bladder sits anteriorly, the rectum posteriorly, and the vagina extends inferiorly from the cervix. Loops of small intestine are displaced superiorly and posteriorly by the enlarging uterine fundus, which at this stage has risen above the pelvic brim toward the midpoint between symphysis pubis and umbilicus. A lateral projection is the clearest way to demonstrate how the second-trimester uterus changes the spatial relationships of the pelvic viscera, compressing the bladder anteriorly and displacing bowel cranially, changes that underlie urinary frequency, constipation and the shifting centre of gravity that contributes to lumbar lordosis and low back pain. Week 16 is clinically meaningful as the window for quadruple serum screening and early anatomy assessment, when fetal movements may first be perceived by multiparous women and fundal height begins to correlate with gestational age. The visible relationship of cord and placenta also supports discussion of placental location and amniocentesis planning. The image suits obstetric and midwifery teaching sequences that track uterine growth week by week, antenatal patient education explaining what the fetus looks like at four months, and textbook or app figures on second-trimester maternal adaptation. Obstetricians, sonographers, childbirth educators and health publishers can use it alongside the other gestational weeks in this series for a consistent visual timeline. Anatomical accuracy verified by SciePro's Medical Advisory Board.