endoderm
- noun
- /ˈɛndəˌdɜrm/
- Specialized
:
endodermo
- So you get the surface ectoderm layer, the mesodermal layer where you get the the notochord forming and then the endoderm in the inside.
Examples
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The embryonic endoderm forms the linings of the digestive and respiratory tracts.
Academic text (1990) -
If it is an endoderm, it is low for a week.
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And what we see is we have cells that are positive for cells of the endoderm lineage, ectoderm, mesoderm.
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The arches are covered externally by ectoderm and internally by endoderm.
Academic text (2006) -
In this phase of the formation of the three layers of the uterine wall, the ectoderm, mesoderm, and endoderm.
Blog text (6) -
Some organisms develop just two layers (ectoderm and endoderm), whereas more complex organisms will develop all three germ layers.
Academic text (2002) -
We have the somite seal, the notochord, the endoderm, the ectoderm, and two primordia of the dorsal ERTA.
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An acquired theory suggests that these cysts develop from the cystic degeneration of Hassall's corpuscles, primitive endoderm, lymphocytes, and reticular cells.
Academic text (1996) -
Although endoderm cells of tailbud-stage R. pipiens embryos have lost nuclear potential, Hennen (1970) was able to reverse these otherwise stable nuclear changes with technical modifications to the transplantation procedure.
Academic text (1999) -
The embryonic endoderm forms the linings of the digestive and respiratory tracts.
Synonyms
A layer inside an embryo that becomes the lining of the gut and lungs
Innermost layer of an embryo that becomes the lining of the digestive and breathing systems
The inner layer of cells in an embryo that becomes the lining of the gut and lungs
A layer of cells inside an embryo that forms the lining of the gut and breathing tubes
Surface Forms
Morphology
endoderm = endo (semi-transparent) = endo + derm
The word is formed from the scientific combining forms 'endo-' (inner) + '-derm' (skin); the composition is clear to learners familiar with scientific morphology but technical for average learners.
Etymology
Endoderm comes from Greek words endo- meaning 'inner' and -derm meaning 'skin', like the derm in epidermis. So endoderm is the 'inner skin' of an embryo that becomes the lining of the gut and lungs.
