Human Fetus at 23 Weeks in the Uterus, Lateral View (Brown Skin)

Description

Seen from the left side, the maternal torso is shown with the abdominal wall and pelvis made semi-transparent so the gravid uterus and its contents read clearly. The fetus at approximately 23 weeks of gestation lies with the head directed inferiorly and slightly anteriorly, knees drawn up and upper limbs flexed toward the face, enclosed by the amniotic sac. The umbilical cord loops from the fetal abdomen toward the placenta, which is implanted on the uterine wall, while the fundus rises well above the level of the umbilicus. Below the presenting part, the cervix, the anteriorly displaced urinary bladder, the pelvic bones and the lumbosacral vertebral column establish the maternal frame of reference. At 23 weeks the fetus sits at the threshold of extrauterine viability, so this stage is central to counselling on periviable birth, antenatal corticosteroid timing and neonatal intensive care planning. The lateral projection makes fundal height, fetal lie and presentation intuitive, and shows why the enlarging uterus compresses the bladder and alters lumbar lordosis, producing urinary frequency and low back discomfort in the second trimester. Placental position relative to the cervix, cord insertion and amniotic fluid volume are the same relationships assessed at the mid-trimester anatomy and growth ultrasound. The image suits obstetric and midwifery teaching sequences that track gestation week by week, antenatal clinic and childbirth education handouts, and patient-facing apps explaining what the second trimester looks like. It also serves textbook and journal figures on fetal growth, placental anatomy and maternal adaptation to pregnancy, and gives pharmaceutical or device communications a clear anatomical baseline. Anatomical accuracy verified by SciePro's Medical Advisory Board.