Pattern. 1  the pattern will be compared to the name. * 2  is a wildcard that will match zero or more letters example: *oo* will match names which contain oo. _ 3  is a wildcard that will match exactly one letter example: __z will match names which have two letters and then a z.
Normally, the placenta is attached to the uterus above the cervix. In rare cases, the placenta forms low in the uterus and is partially or completely covering the cervix. When the placenta is blocking the cervix, it is called placenta previa. Placents posterior mean high risk in doctor's language Posterior means back.
Placenta praevia â low-lying placenta. Placenta praevia (aka. placenta previa) is a condition in pregnancy where the placenta is low-lying. The placenta is your babyâs âlife supportâ system during pregnancy. It is shaped a bit like a pancake attached to the inside of your womb (uterus), and your babyâs umbilical cord emerges from the centre. The cord is like a lifeline with blood going in two directions.