Also called endoblast. Embryology. the innermost cell layer of the embryo in its gastrula stage.
Anatomy. the innermost body tissue that derives from this layer, as the gut lining.
- Also entoderm.
- en·do·der·mal, en·do·der·mic, adjective
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How to use endoderm in a sentence
Ahlborn, in 1884, drew a sharp distinction between the segments of the mesoderm and those of the endoderm.The Origin of Vertebrates | Walter Holbrook Gaskell
In yet others it is partly derived from endoderm and partly from ectoderm (primitive streak of amniotic Vertebrates).
In it cleavage gives rise to a solid mass, which divides by delamination into two layers, the ectoderm and endoderm.
The endoderm, on the other hand, gives rise to the lining of the enteron, and of the glands which open into it.
These are three in number, being called respectively the ectoderm, endoderm and The layer theory.
British Dictionary definitions for endoderm
- endodermal, endodermic, entodermal or entodermic, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for endoderm
The innermost of the primary germ layers of an animal embryo. In vertebrates, the endoderm gives rise to the respiratory tract, gastrointestinal tract (except mouth and anus), glands associated with the gastrointestinal tract, bladder, and urethra. Compare ectoderm mesoderm.
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