Sclerotome

Sclerotome

Infobox Embryology
Name = PAGENAME
Latin =
GraySubject = 17
GrayPage = 80


Caption = Scheme showing the manner in which each vertebral centrum is developed from portions of two adjacent segments.


Caption2 = Transverse section of a human embryo of the third week to show the differentiation of the primitive segment. (Kollmann.) ao. Aorta. m.p. Muscle-plate. n.c. Neural canal. sc. Sclerotome. s.p. cutis-plate.
System =
CarnegieStage = 10
Precursor = somite
GivesRiseTo = vertebrae
MeshName =
MeshNumber =
DorlandsPre =
DorlandsSuf =
A sclerotome is part of a somite, a structure in vertebrate embryonic development. Sclerotomes eventually differentiate into the vertebrae and most of the skull. The caudal half of one sclerotome fuses with the rostral half of the adjacent one to form each vertebra.Walker, Warren F., Jr. (1987) "Functional Anatomy of the Vertebrate" San Francisco: Saunders College Publishing.]

From their initial location within the somite, the sclerotome cells migrate medially towards the notochord. These cells meet the sclerotome cells from the other side to form the vertebral body. From this vertebral body, sclerotome cells move dorsally and surround the developing spinal cord, forming the vertebral arch. ]

References

External links

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* [http://www.ciwemb.edu/labs/fan/laura_pg2.html Diagrams] at ciwemb.edu
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Look at other dictionaries:

  • Sclerotome — Sclérotome Le Sclérotome est issu de la subdivision (différenciation) du mésoderme régionalise des somites. Cette subdivision a lieu lors de l organogénèse, on parle alors du devenir du mésoderme et plus particulièrement des somites en… …   Wikipédia en Français

  • Sclerotome — Scler o*tome (skl[e^]r [ o]*t[=o]m or skl[=e]r [ o]*t[=o]m), n. [Gr. sklhro s hard + te mnein to cut.] (Zo[ o]l.) One of the bony, cartilaginous, or membranous partitions which separate the myotomes. {Scler o*tom ic}, a. [1913 Webster] …   The Collaborative International Dictionary of English

  • Sclérotome — Le Sclérotome est issu de la subdivision (différenciation) du mésoderme régionalise des somites. Cette subdivision a lieu lors de l organogénèse, on parle alors du devenir du mésoderme et plus particulièrement des somites en dermomyotome, myotome …   Wikipédia en Français

  • sclerotome — the block of mesenchyme tissue destined to become a vertebral centra, the posterior and anterior halves of two adjacent sclerotomes fusing to form the centra (rarely each forms a centra as is the case naturally in Amia, or teratologically in… …   Dictionary of ichthyology

  • sclerotome — sclerotomic /sklear euh tom ik, skler /, adj. /sklear euh tohm , skler /, n. 1. Embryol. the part of a mesodermal somite contributing to the development of the vertebrae and ribs. 2. Surg. an instrument for use in performing a sclerotomy. 3. Zool …   Universalium

  • sclerotome — noun a) A knife used in sclerotomy b) A segmented mass of mesenchymal tissue, in a somite, that develops into the ribs …   Wiktionary

  • sclerotome — 1. A knife used in sclerotomy. 2. The group of mesenchymal cells emerging from the ventromedial part of a somite and migrating toward the notochord. Sclerotomal cells from adjacent somites become merged in intersomitically located masses that are …   Medical dictionary

  • sclerotome — n. part of the mesenchymal tissue that develops into the ribs and vertebrae (Embryology); surgical tool used to make incisions in the sclera (Medicine) …   English contemporary dictionary

  • sclerotome — scle·ro·tome …   English syllables

  • sclerotome — n. 1) a surgical knife used in the operation of sclerotomy. 2) (in embryology) the part of the segmented mesoderm (see somite) in the early embryo that gives rise to all the skeletal tissue of the body. The vertebrae and ribs retain the segmented …   The new mediacal dictionary

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