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Sclerotome

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sclerotome [′sklerĀ·ə‚tōm]
(embryology)
The part of a mesodermal somite which enters into the formation of the vertebrae.
(medicine)
A knife used in sclerotomy.
(vertebrate zoology)
The fibrous tissue separating successive myotomes in certain lower vertebrates.

Sclerotome 

in chordate (including human) embryos, the inferior internal portion of a primary segment, or somite. A sclerotome consists of skeletogenous mesenchyma, which during embryonic development separates from the somite, surrounds the cord and the central nervous system, and forms an axial skeleton; in fish the skeleton of the paired fins is also formed by the mesenchyma.



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The basal support for the hindbrain is provided by parachordals that are formed from the sclerotome portion of anterior somites.
 
 
 
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