A
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The neck of the uterus or womb which is sealed with a plug of mucus during pregnancy. During labour, muscular contractions open up the cervix until it is about 10 cm / 4 inch wide so that the baby can pass through it into the vagina .
A screening test for genetic handicap which can be done as early as 11 weeks. Cells are taken from the tissue that surrounds the fetus and are then analysed.
A fluid that the breasts produce during pregnancy and immediately after the birth. It is full of nutrients and contains antibodies which will protect the baby from some infections.