endoderm

American  

[en-duh-durm] / ˈɛn dəˌdɜrm /

noun

1. Also called endoblast.  Embryology. the innermost cell layer of the embryo in its gastrula stage.

2. Anatomy. the innermost body tissue that derives from this layer, as the gut lining.

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endoderm British  

/ ˈɛndəʊˌdɜːm /

noun

1. the inner germ layer of an animal embryo, which gives rise to the lining of the digestive and respiratory tracts See also ectoderm mesoderm

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endoderm Scientific  

/ ĕn′də-dûrm′ /

1. 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.

2. Compare ectoderm mesoderm

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Other Word Forms

• endodermal
  adjective
• endodermic
  adjective

Etymology

Origin of endoderm

1825–35; < French endoderme; see endo-, -derm

Example Sentences

See Examples For:

endoderm

At the bottom of the cup, a new cell population develops in the outer cell layer, the visceral endoderm.

From Science Daily ● Jun. 18, 2024

The epiblast emits Nodal, while the lid, the extraembryonic endoderm, releases the counterpart BMP.

From Science Daily ● Jun. 18, 2024

After gastrulation, the embryo can be thought of as an onion with three layers: the ectoderm, the mesoderm and the endoderm.

From Science Daily ● Sep. 19, 2023

The mesoderm is the third germ layer; it forms between the endoderm and ectoderm in triploblasts.

From Textbooks ● Jan. 1, 2015

It has usually been regarded as representing both endoderm and mesoderm, and the groove which usually leads to its formation has been compared to the abnormally elongated blastopore of a typical gastrula.

From Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 4 "Hero" to "Hindu Chronology" by Various