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placentation    
胎盘形成; 胎座式

胎盘形成; 胎座式

placentation
n 1: the formation of the placenta in the uterus
2: arrangement of the ovules in the placenta and of the
placentas in the ovary

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  • Placentation: Definition, Types, and Significance - Embibe
    In this article, let’s learn more about types of placentation and their formation with some examples What is Placentation? The ovules remain attached to the inner wall of the ovary to a parenchymatous outgrowth or cushion called the placenta The mode of arrangement of ovules within the ovary is called placentation
  • Top 6 Types of Placentation (With Diagram) | Plants
    The following points highlight the top six types of placentation in a plant The types are: 1 Marginal 2 Parietal 3 Axile 4 Free-central 5 Superficial or Laminar 6 Basal Placentation in Plants: Type # 1 Marginal: The ovules develop in rows near the margin on the placenta formed along the ventral suture
  • Prenatal development - Implantation, Placentation | Britannica
    Directly after blastocyst attachment come its establishment within the thickened uterine lining and the participation of its trophoblastic capsule in the differentiation of a placenta, a structure that enables the developing embryo to enter into a direct physiological dependence on the mother
  • New Insights into the Process of Placentation and the Role of Oxidative . . .
    Placentation is the process of formation and development of the placenta and the associated modifications in maternal tissue Its continued interaction character, involving two distinct genomes, suggests the presence of a fine-tuned regulation
  • Placentation Explained: Definition, Examples, Practice Video Lessons
    The placenta is a vital temporary organ formed from maternal and fetal tissues, facilitating oxygen, nutrient, and waste exchange during pregnancy It produces essential hormones like HCG, estrogen, and progesterone, supporting gestation
  • Mechanisms of early placental development in mouse and humans
    This Review summarizes our current understanding of the molecular, genetic and epigenetic regulation of normal placentation, largely based on insights from the mouse model, and outlines the new
  • Placenta: Meaning, Types and Function - Zoology Notes
    The method of formation and fusion of the foetal placenta to the uterine wall is called placentation From the maternal side only a single component, the endometrium, is involved, but from the foetal side there are four prospective elements — amnion, chorion, yolk sac and allantois
  • Comparative Placentation gt; Placentation
    For instance, Mossman (1987), in his extensive classic on comparative placentation, devotes much time to explain the possible derivation of various placental structures





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