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Preferred Label : uterus;

Uberon definition : the female muscular organ of gestation in which the developing embryo or fetus is nourished until birth;

Uberon Development note : Two uteruses usually form initially in a female fetus, and in placental mammals they may partially or completely fuse into a single uterus depending on the species. In many species with two uteruses, only one is functional. Humans and other higher primates such as chimpanzees, along with horses, usually have a single completely fused uterus, although in some individuals the uteruses may not have completely fused [Wikipedia:Uterus];

Uberon Homology note : An infundibulum, uterine tube, uterus, and vagina also differentiate along the oviducts of eutherian mammals.[well established][VHOG];

Uberon Taxon note : Most animals that lay eggs, such as birds and reptiles, have an oviduct instead of a uterus. In monotremes, mammals which lay eggs and include the platypus, either the term uterus or oviduct is used to describe the same organ, but the egg does not develop a placenta within the mother and thus does not receive further nourishment after formation and fertilization. Marsupials have two uteruses, each of which connect to a lateral vagina and which both use a third, middle 'vagina' which functions as the birth canal. Marsupial embryos form a choriovitelline 'placenta' (which can be thought of as something between a monotreme egg and a 'true' placenta), in which the egg's yolk sac supplies a large part of the embryo's nutrition but also attaches to the uterine wall and takes nutrients from the mother's bloodstream.;

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the female muscular organ of gestation in which the developing embryo or fetus is nourished until birth

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19/05/2024


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