Trophoblast
[Gr. trophos - one who feeds; Gr. blastos - germ, bud, shoot]. The outer layer of the conceptus which makes direct contact with endometrium.
inner cellular layer of the trophectoderm (trophoblast), between the syncitiotrophoblast, and chorionic villus capillaries; part of the mammalian placenta.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
trophoblast — a hollow sphere of cells that will go on to implant in the uterus and develop into the placenta and umbilical cord.
trophoblast The outer layer of cells of a blastocyst that adhere to the endometrium during implantation.
trophoblast
[Gk. trophos, feeder + blastos, sprout]
The outer epithelium of the blastocyst, which forms the fetal part of the placenta.
tropic ...
trophoblast - in a mammalian blastocyst, the outer superficial layer of cells surrounding the inner cell mass.
Trophoblast secretes enzymes → digest tissues and blood vessel of endometrium
Embryo uses released nutrients/products from digestion
Blastocyst becomes buried within endometrium
Microvilli are replaced by placenta ...
trophoblast Outer ectodermal nutritive layer of blastodermic vesicle; in mammals it is part of the chorion and attaches to the uterine wall.
trophont Stage in the life cycle of gregarines.
syncytiotrophoblast cells
cAMP
promote maintenance of corpus luteum during beginning of pregnancy ...
The cells of the morula are at first closely aggregated, but soon they become arranged into an outer or peripheral layer, the trophoblast, which does not contribute to the formation of the embryo proper, and an inner cell-mass, ...
The uterine lining becomes enlarged and prepared for implantation of the embryo in the trophoblast layer. Twelve days after fertilization, the trophoblast has formed a two-layered chorion.
 See also: Cells, Membrane, Organ, Cell, Tissue
  
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