Definition of placenta

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Placenta (n.) The vascular appendage which connects the fetus with the parent, and is cast off in parturition with the afterbirth..

Lern More About Placenta

Ovule :: Ovule (n.) The rudiment of a seed. It grows from a placenta, and consists of a soft nucleus within two delicate coatings. The attached base of the ovule is the hilum, the coatings are united with the nucleus at the chalaza, and their minute orifice is the foramen..
Aplacentata :: Aplacentata (n. pl.) Mammals which have no placenta.
Decidua :: Decidua (n.) The inner layer of the wall of the uterus, which envelops the embryo, forms a part of the placenta, and is discharged with it..
Placentas :: Placentas (pl. ) of Placent.
Placentiform :: Placentiform (a.) Having the shape of a placenta, or circular thickened disk somewhat thinner about the middle..
Placental :: Placental (a.) Of or pertaining to the Placentalia.
Trophosperm :: Trophosperm (n.) The placenta.
Placentation :: Placentation (n.) The mode in which the placenta is arranged or composed; as, axile placentation; parietal placentation..
Implacental :: Implacental (n.) A mammal having no placenta.
Placental :: Placental (n.) One of the Placentalia.
Cotyledonary :: Cotyledonary (a.) Having a cotyledon; tufted; as, the cotyledonary placenta of the cow..
Funicle :: Funicle (n.) The little stalk that attaches a seed to the placenta.
Placentiferous :: Placentiferous (a.) Having or producing a placenta.
Marsupialia :: Marsupialia (n. pl.) A subclass of Mammalia, including nearly all the mammals of Australia and the adjacent islands, together with the opossums of America. They differ from ordinary mammals in having the corpus callosum very small, in being implacental, and in having their young born while very immature. The female generally carries the young for some time after birth in an external pouch, or marsupium. Called also Marsupiata..
Implacental :: Implacental (a.) Without a placenta, as marsupials and monotremes..
Cotyledon :: Cotyledon (n.) One of the patches of villi found in some forms of placenta.
Afterbirth :: Afterbirth (n.) The placenta and membranes with which the fetus is connected, and which come away after delivery..
Placental :: Placental (a.) Of or pertaining to the placenta; having, or characterized by having, a placenta; as, a placental mammal..
Acetabulum :: Acetabulum (n.) One of the lobes of the placenta in ruminating animals.
Parietal :: Parietal (a.) Attached to the main wall of the ovary, and not to the axis; -- said of a placenta..
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