Ultrasound scan
A screening or diagnostic technique in which very high frequency sound waves are passed into the body, and the reflected echoes are detected and analysed to build a picture of the internal organs or of a fetus in the uterus.
Umbilical cord
The thick cord of intertwining blood vessels that links baby and placenta, and carries
oxygen and nourishment to the baby.
Unstable lie
The baby changes position often and cannot be considered to be in any definite position.
Uterus or womb
The hollow muscular organ in which the baby lives until birth.
