What are the different types of conjoined twins?
Conjoined twins are categorized by a set of adjectives ending with the suffix "-pagus" from the Greek word for "fixed". Early teratologists such as Ambroise Pare and Geoffrey St. Hillaire were among the first to identify and name the various types of conjoined twins. Many actual sets of twins do not fit perfectly into any of these classifications, and the terms are often combined to describe these twins.
There are several websites that have photos of conjoined twins. Zimbo has a section for them as well as the WellSphere site. The media gallery of USA Today has a photo retrospective section of different conjoined twins dating bask to 1930. Environmental Graffiti has a limited but impressive selection of photos.
Twins that are born connected are called conjoined twins. There are different kinds of conjoined twins, including thoracopagus, omphalopagus, and craniophagus twins, While thoracopagus twins are connected at the torso's top portion and can share one heart, omphalopagus twins are joined from the breastbone to the waist and share a liver. Craniophagus twins are connected at the head region.
Fraternal twins do not need to be separated-- Siamese or Conjoined twins do. Because fraternal twins come from two eggs, they would never have a conjoined twin condition. Conjoined twins occur when an egg divides during the early embryonic stage, but fails to divide completely, resulting in shared body parts and organs.
Generally fraternal twins are more common. For fraternal twins to occur twins must diverge, but differentiate upon becoming separate entities. Identical twins are rarer, in which the two siblings are of the same gender and are exactly alike upon birth. Rarer so are conjoined, or "Siamese" twins. This occurs when twins are born partially or extremely fused together. There is only a 25% survival chance for a conjoined twin. Most were only connected by gristle…
What are the ratings and certificates for Extraordinary People - 2003 The World's Oldest Conjoined Twins?
Conjoined twins result when the zygote of identical twins fails to completely separate. That being said, identical twins occur when a single zygote, that is, a fertilized egg, divides into two separate embryos. The embryos will then, with all conditions met, develop into fetuses sharing the same womb. When the zygote doesn't fully separate, the embryos develop into fetuses without dissolving their connection. Conjoined twins are always identical; fraternal (non-identical) twins are the result of…