Definition of "trophoblast" [trophoblast]

  • (noun) The outermost layer of cells of the blastocyst that attaches the fertilized ovum to the uterine wall and serves as a nutritive pathway for the embryo. Also called trophoderm.

Use "trophoblast" in a sentence

  • "A typical day-5 human embryo consists of 200-250 cells, most of which comprise the trophoblast, which is the outermost layer of the blastocyst."
  • "In a healthy pregnancy, cells that come from the embryo's placenta-called trophoblast cells-move into the walls of the uterus and help to open up maternal arteries, thereby increasing the available blood and nutrient supply."
  • "Perhaps they're hoping the the terms "trophoblast", "blastocoel", and "blastocyst" will disguise the fact that we're talking about a human being?"

Words like "trophoblast"

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