chorionic plate


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Related to chorionic plate: chorion frondosum, smooth chorion

cho·ri·on·ic plate

that portion of the chorionic wall in the region of its uterine attachment, which gives rise to chorionic villi; it consists of the mesoderm that lines the chorionic vesicle and, on the maternal side, of the trophoblast that lines the intervillous spaces; in the last half of gestation, the mesodermal connective tissue is largely replaced by fibrinoid material, and the amnionic membrane is adherent to the fetal side of the plate.

chorionic plate

Etymology: Gk, chorion + platys, flat
the part of the fetal placenta that gives rise to chorionic villi, which attach to the uterus during the early stage of formation of the placenta. It forms the fetal side of the placental disc, and its development is responsible for a normal placenta.

chorionic plate

The fetal surface of the placenta.
See also: plate
References in periodicals archive ?
2) Thrombosis of fetal chorionic plate vessels, especially in the presence of severe fetal inflammatory response or funisitis, is observed (Figure 15).
It also assessed the significance of large vessel lesions and designated the severe category as occlusive or nonocclusive cord thrombi and/or 2 or more thrombi in the chorionic plate and/or stem villous vessels.
In the stem villi and in the chorionic plate there was moderate hardening of the stroma.
Considerable stromal sclerosis, focal hemorrhages in the stem villi and chorionic plate.
However, in the chorionic plate arteries overlie corresponding veins and thrombosed vessels are thus potentially grossly distinguishable from one another (Figure 21).
8,9,10,11) Abnormal chorionic plate shape usually reflects pathologic villous atrophy from the end of first trimester or placental infarct.
In grade 0, the chorionic plate appears as a smooth line with no indentation.
Components of Standardized Examination Gross examination Fetus: * Aggregate weight * Head, scalp, skull * Face: ears, eyes, nose, mouth, palate * Extremities: fingers, palmar creases, toes, foot length * Ribs and vertebral column * External genitalia * Internal genitalia * Loose organs * Other anomalies Placenta: * Aggregate weight * Umbilical cord: length, diameter, vessels, insertion * Membranes: color, insertion * Chorionic plate * Villous and decidual tissue Histologic examination Examination of representative samples of all identified fetal organs, umbilical cord, membranes, chorionic plate, villous parenchyma
In third trimester PMD placenta, the chorionic plate vessels are aneurysmally dilated and tortuous (Figure 1, A and B), measuring up to 2.
Recent chorionic vessel thrombi were defined by laminated fibrin adherent to the endothelium of major vessels in the chorionic plate.
Only in the case of irregularly shaped chorionic plates did each of the two pathologies have a significant association with placental inefficiency.

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