During a third-trimester ultrasound, what would a doctor expect to observe in a fetus? initial development of organs response to noise and light presence of a tail-like structure the first heartbeat

Third-trimester ultrasounds can examine the placenta and the position of the fetus. Sometimes an ultrasound is part of a test called a biophysical profile (BPP) to see whether the fetus is getting enough oxygen. The BPP examines the baby's breathing, movement, amount of amniotic fluid, tone, and heart rate response.