Editing Endoderm (section)

==Production==

The following chart shows the [[tissue (biology)|tissue]]s produced by the endoderm.
The embryonic endoderm develops into the interior linings of two tubes in the body, the digestive and respiratory tube.<ref>{{cite web|last=Gilbert|first=SF|title=Endoderm|url=https://www.ncbi.nlm.nih.gov/books/NBK10107/|publisher=Sinauer Associates|access-date=14 March 2013}}</ref>
{| class="wikitable"
! Layer !! Category !! System !!
|-
| General<ref>The '''General''' category denotes that all or most of the [[animal]]s containing this layer produce the adjacent product.</ref> || [[Gastrointestinal tract]] || the entire [[alimentary canal]] 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]]
|-
| General || [[Respiratory tract]] || the [[Vertebrate trachea|trachea]], [[bronchi]], and [[Pulmonary alveolus|alveoli]] of the [[lungs]]
|-
| General || [[Endocrine]] glands and organs || the lining of the follicles of the [[thyroid gland]] and the epithelial component of the [[thymus|thymus (i.e. thymic epithelial cells).]]
|-
|  || [[Auditory system]] || the [[epithelium]] of the [[auditory tube]] and [[tympanic cavity]]
|-
|  || [[Urinary system]] || the [[urinary bladder]] and part of the [[urethra]]
|}

[[Liver]] and [[pancreas]] cells are believed to derive from a common precursor.<ref name="pmid11532400">{{cite journal |author=Zaret KS |title=Hepatocyte differentiation: from the endoderm and beyond |journal=Curr. Opin. Genet. Dev. |volume=11 |issue=5 |pages=568–74 |date=October 2001 |pmid=11532400 |doi= 10.1016/S0959-437X(00)00234-3}}</ref>

In humans, the endoderm can differentiate into distinguishable organs after 5 weeks of [[embryogenesis|embryonic development]].