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What (who) is endoderm - definition

GERM LAYER THAT FORMS THE EPITHELIAL LINING OF MANY ORGANS

Entoderm; Endodermally; Endodermal; Definitive endoderm

Endoderm

·noun The inner layer of the skin or integument of an Animal.

II. Endoderm ·noun The innermost layer of the blastoderm and the structures derived from it; the hypoblast; the entoblast. ·see ·Illust. of Ectoderm.

endoderm

['?nd?(?)d?:m]

¦ noun Zoology & Embryology the innermost layer of cells or tissue of an embryo, or the parts derived from this (e.g. the lining of the gut).

Derivatives

endodermal adjective

Origin

C19: from endo- + Gk derma 'skin'.

Endoderm

Endoderm is the innermost of the three primary germ layers in the very early embryo. The other two layers are the ectoderm (outside layer) and mesoderm (middle layer), with the endoderm being the innermost layer.

https://en.wikipedia.org/wiki/Endoderm

Wikipedia

Endoderm

Endoderm is the innermost of the three primary germ layers in the very early embryo. The other two layers are the ectoderm (outside layer) and mesoderm (middle layer). Cells migrating inward along the archenteron form the inner layer of the gastrula, which develops into the endoderm.

The endoderm consists at first of flattened cells, which subsequently become columnar. It forms the epithelial lining of multiple systems.

In plant biology, endoderm corresponds to the innermost part of the cortex (bark) in young shoots and young roots often consisting of a single cell layer. As the plant becomes older, more endoderm will lignify.

https://en.wikipedia.org/wiki/Endoderm

Examples of use of endoderm

1. Other animals, including humans and insects, have a third layer of embryonic tissue, the mesoderm, wedged between the ectoderm and the endoderm.

2. It was not until the 1'th century that naturalists began to understand how cnidarians developed from fertilized eggs, their body parts growing from two primordial layers of tissue, the endoderm and ectoderm.