Schizocoely

 ( Developmental Biology ) 

Schizocoely (adjective forms: schizocoelous or schizocoelic) is a process by which some animal embryos develop. The schizocoely mechanism occurs when secondary body cavities () are formed by splitting a solid mass of embryonic tissue.

All schizocoelomates are protostomians and they show holoblastic, spiral, determinate cleavage.

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Etymology The term schizocoely derives from the Ancient Greek words (), meaning 'to split', and (), meaning 'cavity'.

Anatole Bailly (1981). 9782010035289, Hachette. ISBN 9782010035289

This refers to the fact that fluid-filled body cavities are formed by splitting of mesodermal cells.

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Taxonomic distribution called protostomes develop through schizocoely for which they are also known as schizocoelomates.

Schizocoelous development often occurs in protostomes, as in phyla Mollusca, Annelida, and Arthropoda. Deuterostomes usually exhibit enterocoely; however, some deuterostomes like can exhibit schizocoely as well.

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Embryonic development The term refers to the order of organization of cells in the gastrula leading to development of the coelom. In mollusks, annelids, and arthropods, the mesoderm (the middle germ layer) forms as a solid mass of migrated cells from the single layer of the gastrula. The new mesoderm then splits, creating the pocket-like cavity of the coelom.

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See also

• Deuterostome
• Development of the digestive system
• Developmental biology
• Embryology
• Embryonic development
• Ontogeny
• Protostome

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External links

• Enterocoelous and schizocoelous conditions - UTM.edu

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