Pregnant Woman at 17 Weeks of Gestation, Lateral View (Black Skin)

Description

Seen from the side with the maternal abdominal wall rendered semi-transparent, the gravid uterus occupies the lower abdomen and rises above the pubic symphysis toward the umbilical level. Within the amniotic sac, a fetus of about 17 weeks lies in a flexed attitude, head directed anteroinferiorly, with the umbilical cord looping from the ventral abdominal wall to the placental disc applied to the uterine wall. Posterior to the uterus the rectum descends toward the pelvic floor, while the urinary bladder sits anteriorly behind the pubis; loops of small intestine are displaced superiorly and posteriorly by the enlarging fundus. The lumbar vertebrae, sacrum and hip bone provide the skeletal frame, and the woman's hands rest on the lower abdomen and lumbar region. A mid-second-trimester lateral projection makes the mechanical consequences of uterine growth explicit: cranial displacement of bowel, anterior traction on the abdominal wall, and increased lumbar lordosis that underlies common low back and pelvic girdle pain. The relationship of the fundus to the umbilicus is the anatomical basis of symphysis-fundal height measurement at antenatal visits, and the anterior position of the bladder explains urinary frequency and reduced functional capacity. Around this stage quickening is typically first appreciated, and fetal biometry, anomaly screening and placental localisation are routinely performed by ultrasound. The image suits obstetric and midwifery teaching sequences that track uterine and fetal growth week by week, antenatal class handouts, pregnancy apps and patient-facing leaflets explaining what is happening in the second trimester. It also serves textbook and journal figures on maternal physiological adaptation, and educational material produced by clinics, publishers and women's health device companies. Anatomical accuracy verified by SciePro's Medical Advisory Board.