Endoderm
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222242459
2008-06-28T08:17:31Z
Gracillis
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[[th:เอนโดเดิร์ม]]
{{Infobox Embryology |
Name = {{PAGENAME}} |
Latin = |
GraySubject = 6 |
GrayPage = 49 |
Image = Endoderm2.png |
Caption = Organs derived from endoderm. |
Image2 = Gray10.png |
Caption2 = Blastodermic vesicle of ''[[Vespertilio murinus]]''. (Endoderm labeled as 'entoderm'.) |
System = |
CarnegieStage = |
Days = 16 |
Precursor = [[hypoblast]] |
GivesRiseTo = [[splanchnopleure]] |
MeshName = Endoderm |
MeshNumber = A16.254.425.407 |
DorlandsPre = |
DorlandsSuf = |
}}
'''Endoderm''', (sometimes called ''Entoderm'') is one of the [[germ layer]]s formed during animal [[embryogenesis]]. 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 the whole of the [[digestive tube]] except part of the [[mouth]], [[pharynx]] and the terminal part of the [[rectum]] (which are lined by involutions of the [[ectoderm]]), the lining cells of all the glands which open into the digestive tube, including those of the [[liver]] and [[pancreas]], the [[epithelium]] of the [[auditory tube]] and [[tympanic cavity]], of the [[Vertebrate trachea|trachea]], [[bronchi]], and [[alveoli]] of the [[lungs]], of the [[urinary bladder]] and part of the [[urethra]], and that which lines the follicles of the [[thyroid gland]] and [[thymus]].
==Production==
The following graph represents the products produced by the endoderm.
{| class="wikitable"
! Germ Layer !! Category !! Product
|-
| Endoderm || General<ref>The '''General''' category denotes that all or most of the [[animal]]s containing this layer produce the adjacent product.</ref> || [[Gastrointestinal tract]]
|-
| Endoderm || General || [[Respiratory tract]]
|-
| Endoderm || General || [[Endocrine]] glands and organs ([[liver]] and [[pancreas]])
|}
==Additional images==
<gallery>
Image:Gray21.png|Section through the embryo.
Image:Gray32.png|Section through ovum imbedded in the uterine decidua
</gallery>
==See also==
*[[Ectoderm]]
*[[Germ layer]]
*[[Histogenesis]]
*[[Mesoderm]]
*[[Organogenesis]]
*[[Endodermal sinus tumor]]
==Notes==
<div class="references-small">
<references />
</div>
==References==
{{wiktionary|endoderm}}
*Evers, Christine A., Lisa Starr. ''Biology:Concepts and Applications.'' 6th ed. United States:Thomson, 2006. ISBN 0-534-46224-3.
{{Embryology}}
{{Germ layer}}
{{Gray's}}
[[Category:Developmental biology]]
[[Category:Embryology]]
[[Category:Gastrulation]]
[[ar:أديم باطن]]
[[cs:Entoderm]]
[[da:Endoderm]]
[[de:Entoderm]]
[[es:Endodermo]]
[[eo:Endodermo]]
[[fr:Endoderme]]
[[it:Endoderma]]
[[nl:Endoderm]]
[[pl:Endoderma (zoologia)]]
[[pt:Endoderme]]
[[sr:Ендодерм]]
[[fi:Endodermi]]
[[sv:Endoderm]]
[[th:เอนโดเดิร์ม]]
[[tr:Endoderm]]
[[uk:Ентодерма]]
[[zh:内胚层]]