eutely
Sign in to saveEutelic organisms have a fixed number of somatic cells when they reach maturity, the exact number being relatively constant for any one species. This phenomenon is also referred to as cell constancy. Development proceeds by cell division until maturity; further growth occurs via cell enlargement only. This growth is known as auxetic growth. It is shown by members of the now obsolete phylum Aschelminthes. In some cases, individual organs show eutelic properties while the organism itself does not.A mature gastrotrich, with visible cells on the surface. Further growth will now occur solely by cel
Article
8 sectionsContents
- Background
- Examples
- Phylogeny
- ''Hydatina senta''
- Incomplete constancy
- Eutelic response to injury
- References
- External links
Eutelic organisms have a fixed number of somatic cells when they reach maturity, the exact number being relatively constant for any one species. This phenomenon is also referred to as cell constancy. Development proceeds by cell division until maturity; further growth occurs via cell enlargement only. This growth is known as auxetic growth. It is shown by members of the now obsolete phylum Aschelminthes. In some cases, individual organs show eutelic properties while the organism itself does not.A mature gastrotrich, with visible cells on the surface. Further growth will now occur solely by cell enlargement. |thumb|225x225px
== Background == In 1909, Eric Martini coined the term eutely to describe the idea of cell constancy and to introduce a term literature sources would be able to use to identify organisms with a fixed amount and arrangement of cells and tissues. Since the introduction of eutely in the early 1900s, textbooks and theories of cytology and ontogeny have not used the term consistently. Advancements in the field of eutely has been developed by morphologists.