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Dicephalic parapagus (/ d aɪ ˈ s ɛ f ə l ɪ k /) is a rare form of partial twinning with two heads side by side on one torso. [1] Infants conjoined this way are sometimes called "two-headed babies" in popular media. [2] The condition is also called parapagus dicephalus. [1] If carried to term, most dicephalic twins are stillborn, or die ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 13 December 2024. American conjoined twins (born 1990) Abby and Brittany Hensel Born Abigail Loraine Hensel Brittany Lee Hensel (1990-03-07) March 7, 1990 (age 34) New Germany, Minnesota, U.S. Education Bethel University Occupation(s) Fifth-grade teachers at Sunnyside Elementary in New Brighton ...
The key difference between a parasitic twin and conjoined twins is that in parasitic twins, one twin, the parasite, stops development during gestation, whereas the other twin, the autosite, develops completely. [citation needed] In normal monozygotic twin development, one egg is fertilized by a single sperm. The egg will then completely split ...
Conjoined twins, popularly referred to as Siamese twins, [1] [2] are twins joined in utero. [ a ] It is a very rare phenomenon, estimated to occur in anywhere between one in 50,000 births to one in 200,000 births, with a somewhat higher incidence in southwest Asia and Africa. [ 5 ]
Abigail and Brittany Hensel, born in 1990, are another instance of dicephalus parapagus dipus twins who grew up. They were born with two functional arms, plus a vestigial third arm, which was surgically removed. Each twin has her own complete head, heart and spine, and controls one arm and one leg.
Conjoined twins; Craniopagus parasiticus; Cyclopia; Durga, a three-eyed Hindu goddess; Edward Mordake, a disputed story of a 19th-century man with a face on the back of his head; Futakuchi-onna, a female Japanese yōkai with mouth on back of her head/hair; Janus, a Roman god with two faces
During embryonic development, twins can form from the splitting of a single embryo (monozygotic) which forms identical twins or the twins can arise from separate oocytes in the same menstrual cycle which forms fraternal twins. Although the latter is more frequent, monozygotic is the reason conjoined twins can develop.
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