Organogenesis
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robot Modifying: [[sk:Organogenéza (embryogenéza)]]
In [[embryogenesis|animal development]], '''organogenesis''' is the process by which the [[ectoderm]], [[endoderm]], and [[mesoderm]] develop into the [[internal organ]]s of the organism. Internal organs initiate development in humans within the 3rd to 8th weeks in utero.The [[germ layer]]s in organogenesis differ by three processes: folds, splits, and condensation. Developing early during this stage in [[chordate]] animals are the [[neural tube]] and [[notochord]]. [[Vertebrate]] animals all differentiate from the [[gastrula]] the same way. Vertebrates develop a [[neural crest]] that differentiates into many structures, including some bones, muscles, and components of the [[peripheral nervous system]]. The [[coelom]] of the body forms from a split of the mesoderm along the [[somite axis]].
==Production==
[[Image:Germ_layers.png|thumb|575px|The [[endoderm]] produces tissue within the [[lung]]s, [[thyroid]], and [[pancreas]]. The [[mesoderm]] aids in the production of [[cardiac muscle]], [[skeletal muscle]], [[smooth muscle]], tissues within the [[kidney]]s, and [[red blood cell]]s. The [[ectoderm]] produces tissues within the [[Epidermis (skin)|epidermis]] and aids in the formation of [[neuron]]s within the brain, and [[melanocytes]].]]
[[Image:cell differentiation.gif|right|thumb|300px|Organs derived from each germ layer. Image from [http://www.ncbi.nih.gov/About/primer/genetics_cell.html NCBI].]]
The proceeding graph represents the products produced by the three germ layers.
{| 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]]
|-
| Endodern || General || [[Respiratory tract]]
|-
| Endoderm || General || [[Endocrine]] glands and organs ([[liver]] and [[pancreas]])
|-
| Mesoderm || General || [[skeletal system|Bones]]
|-
| Mesoderm || General || Most of the [[Circulatory system]]
|-
| Mesoderm || General || [[Connective tissue]]s of the gut and [[integumentary system|integuments]]
|-
| Mesoderm || General || [[gastrointestinal tract#Lower gastrointestinal tract|Excretory Tract]]
|-
| Mesoderm || General || [[Mesenchyme]]
|-inside the uterus
| Mesoderm || General || [[Mesothelium]]
|-
| Mesoderm || General || [[Muscular system|Muscles]]
|-
| Mesoderm || General || [[Peritoneum]]
|-
| Mesoderm || General || [[Reproductive System]]
|-
| Mesoderm || General || [[Urinary System]]
|-
| Mesoderm || Vertebrate<ref>The '''Vertebrate''' category denotes that all or most of the [[vertebrate]]s containing this layer produce the adjacent product.</ref> || [[Chordamesoderm]]
|-
| Mesoderm || Vertebrate || [[Paraxial mesoderm]]
|-
| Mesoderm || Vertebrate || [[Intermediate mesoderm]]
|-
| Mesoderm || Vertebrate || [[Lateral plate mesoderm]]
|-
| Ectoderm || General || [[Nervous system]]
|-
| Ectoderm || General || Outer part of [[integumentary system|integument]]
|-
| Ectoderm || Vertebrate || [[Skin]] (along with [[glands]], [[hair]], [[nail (anatomy)|nails]])
|-
| Ectoderm || Vertebrate || [[Epithelium]] of the [[mouth]] and [[nasal cavity]]
|-
| Ectoderm || Vertebrate || [[lens (vision)|Lens]] and [[cornea]] of the [[eye]]
|-
| Ectoderm || Vertebrate || [[Melanocytes]]
|-
| Ectoderm || Vertebrate || [[Peripheral nervous system]]
|-
| Ectoderm || Vertebrate || Facial [[cartilage]]
|-
| Ectoderm || Vertebrate || [[Dentin]] (in teeth)
|-
| Ectoderm || Vertebrate || [[Brain]] ([[rhombencephalon]], [[mesencephalon]] and [[prosencephalon]])
|-
| Ectoderm || Vertebrate || [[Spinal cord]] and [[motor neuron]]s
|-
| Ectoderm || Vertebrate || [[Retina]]
|-
| Ectoderm || Vertebrate || [[Posterior pituitary]]
|}
==See also==
*[[Ectoderm]]
*[[Embryogenesis]]
*[[Endoderm]]
*[[Eye development]]
*[[Germ layer]]
*[[Germ line development]]
*[[Heart development]]
*[[Histogenesis]]
*[[Limb development]]
*[[Mesoderm]]
*[[Morphogenesis]]
==Notes==
<div class="references-small">
<references />
</div>
==References==
{{wiktionary|organogenesis}}
*Evers, Christine A., Lisa Starr. ''Biology:Concepts and Applications.'' 6th ed. United States:Thomson, 2006. ISBN 0-534-46224-3.
{{Embryology}}
{{Germ layer}}
[[Category:Developmental biology]]
[[Category:Embryology]]
[[de:Organogenese]]
[[es:Organogénesis]]
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[[pl:Organogeneza]]
[[sk:Organogenéza (embryogenéza)]]
[[sr:Органогенеза]]
[[fi:Organogeneesi]]