placentation


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plac·en·ta·tion

 (plăs′ən-tā′shən)
n.
1.
a. Formation of a placenta in the uterus.
b. The type or structure of a placenta.
2. Botany Arrangement of placentas within the ovary.

placentation

(ˌplæsɛnˈteɪʃən)
n
1. (Botany) botany the way in which ovules are attached in the ovary
2. (Zoology) zoology
a. the way in which the placenta is attached in the uterus
b. the process of formation of the placenta
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.placentation - the formation of the placenta in the uterus
bodily function, bodily process, body process, activity - an organic process that takes place in the body; "respiratory activity"
2.placentation - arrangement of the ovules in the placenta and of the placentas in the ovary
reproductive structure - the parts of a plant involved in its reproduction
apical placentation - where one or few ovules develop at the top of a simple or compound ovary
axile placentation - ovules are borne at or around the center of a compound ovary on an axis formed from joined septa
basal placentation - where one or few ovules develop at the base of a simple or compound ovary
free central placentation - where ovules develop on a central column in a compound ovary lacking septa or with septa at base only
lamellate placentation - with ovules on thin extensions of the placentae into a compound ovary
marginal placentation, ventral placentation - with ovules borne on the wall along the ventral suture of a simple ovary
parietal placentation - where ovules develop on the wall or slight outgrowths of the wall forming broken partitions within a compound ovary
References in periodicals archive ?
We will also empirically evaluate global models of evolutionary conservation patterns during embryogenesis and placentation.
Placental preterm birth comprised preterm birth following preeclampsia or intrauterine growth restriction (IUGR), which can result from impaired placentation early in pregnancy.
A dedicated obstetric sonogram showed a posterior fundal placenta and a normal uteroplacental interface with normal color Doppler images, without any evidence of abnormal placentation.
CINCINNATI, July 17, 2014 /PRNewswire-USNewswire/ -- Scientists have identified a crucial molecular key to healthy embryo implantation and pregnancy in a study that may offer new clues about the medical challenges of infertility/subfertility, abnormal placentation, and placenta previa.
The characteristics of a typical Scrophularia include; asymmetrical mostly tubular flowers, ovaries with axile placentation and numerous ovules, capsular fruits, and seeds with endosperm, each are shared with one or several related families [3].
A distinguishing morphological feature of Pittosporaceae is the presence of superior ovaries with parietal or axile placentation, whereas the other three families of Apiineae have inferior ovaries with an apical placentation.
When clinicians abandon performing or referring for a high-quality NT measurement, they can miss or significantly delay the diagnosis of twins/zygosity, growth abnormalities and placentation, cardiac defects, and numerous other anomalies.
This may be due to species-specific differences in exposure relative to critical periods of development, pharmacokinetics, developmental patterns, placentation, or modes of action.
falciparum-infected pregnant women inhibited extravillous trophoblast invasion and migration, offering a possible explanation for the pathophysiologic events that may cause impaired placentation, reduced placental weight, and low infant birthweight (32).
High-risk pregnancies should continue to be identified; however, identification often occurs after placentation.
Placentation in the Mexican lizard Sceloporus mucronatus (Squamata: Phrynosomatidae).
They cover its history, complications, placentation, pathophysiology, the use of color injection and digital angiography, determining the natural history, clinical effects, diagnosis, maternal nutrition, the role of the cervix, acute twin-to-twin transfusion syndrome, feto-fetal transfusion syndrome in triplets, therapy, neonatal outcomes, monitoring, and ethical issues.