Trophoblastic
Trophoblastic
Trophoblastic (pronunciation: troh-foh-blas-tik) is an adjective that refers to the trophoblast, a layer of tissue on the outside of a mammalian blastocyst, providing the embryo with nutrients and developing into a large part of the placenta.
Etymology
The term "trophoblastic" is derived from the Greek words "trophe" meaning nourishment, and "blastos" meaning germ. It was first used in the late 19th century to describe the cells that contribute to the formation of the placenta in mammals.
Related Terms
- Trophoblast: The outer layer of cells in a mammalian embryo that attaches the embryo to the uterine wall and serves as a nutritive pathway for the embryo.
- Blastocyst: An early stage in the development of mammalian embryos, following the morula stage. The blastocyst is a hollow sphere made up of an outer layer of cells (the trophoblast), a fluid-filled cavity (the blastocoel), and a cluster of cells on the interior (the inner cell mass).
- Placenta: An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to the growing baby and removing waste products from the baby's blood.
- Embryo: An early stage of development in multicellular organisms. In mammals, the embryo stage is characterized by rapid growth and differentiation of cells.
See Also
External links
- Medical encyclopedia article on Trophoblastic
- Wikipedia's article - Trophoblastic
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