Lexic.us

Definition of Trophoblast

1. Noun. The membrane that forms the wall of the blastocyst in early development; aids implantation in the uterine wall. "After implantation of the blastocyst in the uterine wall the trophoblast divides into two layers, the chorion and the placenta"

Definition of Trophoblast

1. Noun. (cytology) The membrane of cells that forms the wall of a blastocyst during early pregnancy, providing nutrients to the embryo and later developing into part of the placenta. ¹

¹ Source: wiktionary.com

Definition of Trophoblast

1. [n -S]

Medical Definition of Trophoblast

1. Extra embryonic layer of epithelium that forms around the mammalian blastocyst and attaches the embryo to the uterus wall. Forms the outer layer of the chorion and together with maternal tissue will form the placenta. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Lexicographical Neighbors of Trophoblast

Literary usage of Trophoblast

Below you will find example usage of this term as found in modern and/or classical literature:

1. A Laboratory Text-book of Embryology by Charles Sedgwick Minot (1903)
"The trophoblast. The trophoblast is the name applied to the special ... It is from this supposed function that the layer derives its name of trophoblast. ..."

2. Contributions to the Study of the Early Development and Imbedding of the by Thomas Hastie Bryce, John Hammond Teacher, John Martin Munro Kerr (1908)
"The plasmodi-trophoblast from its very nature is probably highly irregular ... The cyto-trophoblast constitutes a relatively thin lamella which forms the ..."

3. Manual of antenatal pathology and hygiene by John William Ballantyne (1904)
"THE trophoblast a lenticular mass which lies thus in the uterine mucosa. Its outer aspect consists of a thick layer of what may be conveniently termed ..."

4. Medical gynecology by Samuel Wyllis Bandler (1914)
"The trophoblast.—The outer layer of the ovum develops into what is known as the trophoblast, which is a product of the ectoderm, and from it develop the ..."

5. The Conquest of Cancer: A Plan of Campaign, Being an Account of the by Caleb Williams Saleeby (1907)
"The problem as it then presented itself to Dr. Beard is thus expressed by him: "It was that in every normal development the trophoblast, which in the ..."

6. Progressive Medicine by Hobart Amory Hare (1903)
"It is the trophoblast which possesses the power to open up vessels and to grow actively through the decidua; but since the life of the trophoblast is ..."

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