endoderm


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Related to endoderm: mesoderm

endoderm

 [en´do-derm]
the innermost of the three primary germ layers of the embryo; from it are derived the epithelium of the pharynx, respiratory tract (except the nose), digestive tract, bladder, and urethra. Called also endoblast, entoderm, entoblast, and hypoblast.

en·do·derm

(en'dō-dĕrm),
The innermost of the three primary germ layers of the embryo (ectoderm, mesoderm, endoderm); from it is derived the epithelial lining of the primordial gut and the epithelial component of the glands and other structures (for example, lower respiratory system) that develop as outgrowths from the gut.
Synonym(s): entoderm
[endo- + G. derma, skin]

endoderm

/en·do·derm/ (en´do-derm) the innermost of the three primitive germ layers of the embryo; from it are derived the epithelium of the pharynx, respiratory tract (except the nose), digestive tract, bladder, and urethra.endoder´malendoder´mic

endoderm

(ĕn′də-dûrm′) also

entoderm

(ĕn′tə-)
n.
The innermost of the three primary germ layers of an animal embryo, developing into the gastrointestinal tract, the lungs, and associated structures. Also called hypoblast.

en′do·der′mal adj.

endoderm

[en′dədurm]
Etymology: Gk, endon + derma, skin
(in embryology) the innermost of the cell layers that develop from the embryonic disk of the inner cell mass of the blastocyst. From the endoderm arises the epithelium of the trachea, bronchi, lungs, GI tract, liver, pancreas, urinary bladder, anal canal, pharynx, thyroid, tympanic cavity, tonsils, and parathyroid glands. The endoderm thus comprises the lining of the cavities and passages of the body and the covering of most of the internal organs. Compare ectoderm, hypoblast, mesoderm.

en·do·derm

(en'dō-dĕrm)
The innermost of the three primary germ layers of the embryo (ectoderm, mesoderm, endoderm); from it are derived the epithelial lining of the primordial gut and the epithelial component of the glands and other structures (e.g., lower respiratory system) that develop as outgrowths from the gut tube.
Synonym(s): entoderm, hypoblast.
[endo- + G. derma, skin]

endoderm

The innermost of the three primary germ layers of an EMBRYO. The endoderm develops into the INTESTINAL TRACT and its associated structures and glands, the respiratory and urinary tracts and most of the endocrine glands. See also MESODERM and ECTODERM.

endoderm

or

endoblast

the embryological germ layer in animals that gives rise to the gut system and its association organs. It arises initially as a result of GASTRULATION from cells which have moved in from the surface of the BLASTULA. Compare ECTODERM and MESODERM.

endoderm

inner layer of the three primary germ layers forming an embryo; gives rise to gut and associated structures

endoderm

References in periodicals archive ?
Biochemical evidence for membranebound endoderm specific alkaline phosphate in larvae of the ascidian Halocynthia roretzi.
The team also identified a marker that distinguishes endoderm from what Baetge calls its "somewhat evil twin," extra-embryonic endoderm.
Scientists activated two important development pathways that are known to make endoderm form three-dimensional tissue.
This so-called transcription factor "can induce cells of the embryo to become endoderm," says Melton.
com, together with colleagues from ViaCyte (formerly Novocell), announced the successful derivation from its human parthenogenetic stem cells (hpSCs) of enriched cultures of definitive endoderm (DE).
The mesodermal layer divides and combines with trophectoderm to form the chorion and with endoderm to form the yolk sac.
The first step turned pluripotent stem cells into an embryonic cell type called definitive endoderm, which gives rise to the lining of the esophagus, stomach and intestines as well as the lungs, pancreas and liver.
Average methylation in day 21 tail tissues from a subset of genistein-supplemented animals (n = 5) was highly correlated with average methylation in day 150 tissues derived from the ectoderm (brain and tail), mesoderm (kidney), and endoderm (liver) (Figure 4).
Since the thyroid gland is endodermally derived and the thyroglossal duct may contain remnants of endoderm and ectoderm, (6) the current lesion may represent a neoplastic process of primitive ductal epithelium.
From the ectoderm will eventually spring the skin and the nervous system, whereas the endoderm gives rise to the lungs and parts of the gut.
The patent filings cover technology for the differentiation of hESCs into the precursors of numerous endoderm cell types, including pancreatic islet cells.
It was recently discovered by modern science that for adequate growth of underlying epidermal or endoderm cells, moisture and proper aeration was necessary.