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Velamentous cord insertion is a complication of pregnancy where the umbilical cord is inserted in the fetal membranes. It is a major cause of antepartum hemorrhage that leads to loss of fetal blood and associated with high perinatal mortality.
In Type 1, there is a velamentous insertion with vessels running over the cervix. In Type 2, unprotected vessels run between lobes of a bilobed or succenturiate lobed placenta. In Type 3, a portion of the placenta overlying the cervix undergoes atrophy. In this type, there is a normal placental cord insertion and the placenta has only one lobe.
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Placental pathology (velamentous insertion, succenturiate lobes, bipartite i.e. bilobed placenta etc.) [13] Baby is in an unusual position: breech (buttocks first) or transverse (lying horizontally across the womb). Placenta previa is itself a risk factor of placenta accreta. Alcohol use during pregnancy was previously listed as a risk factor ...
In placental mammals, the umbilical cord (also called the navel string, [1] birth cord or funiculus umbilicalis) is a conduit between the developing embryo or fetus and the placenta. During prenatal development , the umbilical cord is physiologically and genetically part of the fetus and (in humans) normally contains two arteries (the umbilical ...
Velamentous cord insertion This page was last edited on 18 September 2024, at 23:41 (UTC). Text is available under the Creative Commons Attribution-ShareAlike 4.0 ...
Anatomy scan image of a human placenta and umbilical cord (colour Doppler rendering) showing central placement of the cord in the placenta and three vessels in the cord, which is the normal physiology. A standard anatomy scan typically includes: [4] Fetal number, including number of amnionic sacs and chorionic sacs for multiple gestations
Other influences include Max Wertheimer's gestalt structure theory and Kant's account of schemas in categorization, as well as studies in experimental psychology on the mental rotation of images. In addition to the dissertation on over by Brugman, Lakoff's use of image schema theory also drew extensively on Talmy and Langacker's theories of ...