Endoderm (av grek. entos, innanför, och derma, hud), det innersta cellskiktet hos ett embryo i gastrulaskedet . Från blastula till gastrula: Ett embryo med ett enkelt cellskikt (1) omvandlas till ett embryo med två cellskikt, en s.k. gastrula (2). Ektodermet är gult i bilden, endodermet rött.

The endodermis is the boundary between the cortex and the stele . In many seedless vascular plants, the endodermis is a distinctly visible layer of cells immediately outside the vascular cylinder (stele) in roots and shoots. In most seed plants, especially woody types, an endodermis is absent from the stems but is present in roots.

Endoderm. Endodermul este unul dintre cele trei foițe primare din dezvoltarea embrionului de la animalele superioare, aflându-se la interior. Celelalte două foițe, ectodermul și mezodermul se află la exterior și între cele două.

Endoderma basicladiae. Endoderma is a genus of green algae, in the family Ulvellaceae.

Thermogenesis. v. t. e. An endotherm (from Greek ἔνδον endon "within" and θέρμη thermē "heat") is an organism that maintains its body at a metabolically favorable temperature, largely by the use of heat released by its internal bodily functions instead of relying almost purely on ambient heat. Such internally generated heat is ...

69070. Anatomical terminology. The ectoderm is one of the three primary germ layers formed in early embryonic development. It is the outermost layer, and is superficial to the mesoderm (the middle layer) and endoderm (the innermost layer). It emerges and originates from the outer layer of germ cells. The word ectoderm comes from the Greek ektos ...

Structure. The hypoblast lies beneath the epiblast and consists of small cuboidal cells. The hypoblast in fish (but not in birds and mammals) contains the precursors of both the endoderm and mesoderm. In birds and mammals, it contains precursors to the extraembryonic endoderm of the yolk sac.. In chick embryos, early cleavage forms an area opaca and an area pellucida, and …

The mesoderm is the middle layer of the three germ layers that develops during gastrulation in the very early development of the embryo of most animals. The outer layer is the ectoderm, and the inner layer is the endoderm. The mesoderm forms mesenchyme, mesothelium, non-epithelial blood cells and coelomocytes. Mesothelium lines coeloms.