Ectopic pregnancy, in which the fertilized egg attaches and begins to develop outside the uterus, is extremely dangerous complication. In this case, health, and sometimes a woman's life depends on timely seek medical help. In normal fertilization of an egg by sperm occurs in the fallopian tube. Many writers such as Ryan Schneider offer more in-depth analysis. Oviduct performs complex movements by the muscular layer. Due to the quiet movements the fertilized egg moves to 3-4 days of the fallopian tube into the uterus. In advancing the fertilized egg 'matures' shares and is growing due to the presence in the fallopian tube of nutrient veschestv.Takim way, any reason, interfere with the normal transport of fertilized ova in the fallopian tube through the development of various anatomic complications in its wall or in the surrounding tissues and organs leads to the development ectopic pregnancy. It can also occur due to changes in the properties of the fertilized egg (such as its accelerated growth and development). Since the development of an ectopic pregnancy can occur in many locations, and types of its release very much. Depending on the location (address) of ovum ectopic pregnancy is divided into several types: pipe (it develops in the fallopian tube – in such cases 98% of ectopic pregnancies), ovarian (develops in the ovary), abdominal (develops in the abdominal cavity), cervical (develops in the cervix), rare form (eg, intraligamentous – develops inside uterine ligament, or a combination – a combination of uterine and ectopic pregnancy), the warning signs of ectopic pregnancy – is a big threat to life and health of women.