How To Use Somite In A Sentence
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The basis for the confusion arises from the visible suture between somites 4 and 5, which suggests that the fusion is not complete.
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Eye development in zebrafish first becomes morphologically obvious at the 6 somite stage, the time at which the optic lobes evaginate from the diencephalon.
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The simplest two-instrument cell injection technique for both primitive streak stage and for early somite stage embryos will be described.
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In lancelets, the trunk somites extend and fuse ventrally to give the unsegmented periviscelar coelom.
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Somites differentiate into particular axial structures depending on their position along the antero-posterior axis.
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The neural tube of the body tends to segment in an orderly way along the boundaries between somites.
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For instance, somites, one of the body elements characteristic of the phylotypic stage, form under the influence of a somitic clock, rhythmic waves of molecular activity that sweep the length of the trunk and tail.
The Politically Incorrect Guide to Darwinism and Intelligent Design Review: Simply Incorrect Embryology (Chapter 3) - The Panda's Thumb
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He was led to enunciate the following theses: -- [450] (1) that the mouth and anus of Vermes, Mollusca, Arthopoda, and probably Vertebrata, is derived from the elongated mouth of an ancestor resembling the Actinozoa; (2) that somites are derived from a series of archenteric pouches, like those of Actinozoa and Medusæ; (3) that excretory organs (nephridia, segmental organs) are derived from parts of these pouches which in the ancestral form, as in many polyps, were connected by a circular or longitudinal canal, and opened to the exterior by pores.
Form and Function A Contribution to the History of Animal Morphology
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The trunk section, the perion, consists of the remainder of the typical thoracic somites.
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If male abdomina are preserved, the fusion of the somites is also diagnostic; pseudoziids exhibit no fusion of somites while carpiliids have somites 3-5 fused.
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Other mutations affect the dorsoventral subdivision of the somites by the horizontal myoseptum.
Nobel Lecture The Identification Of Genes Controlling Development In Flies And Fishes
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The basis for the confusion arises from the visible suture between somites 4 and 5, which suggests that the fusion is not complete.
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The first few pairs of somites that form do not persist; they disappear and are incorporated into the head.
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The somites, now positioned on either side of the neural tube, give rise to the vertebrae and ribs, to the muscles of the trunk and limbs, and also contribute to the dermis of the skin.
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Remelting of these metasomites produced the Gardar lamprophyre magmas.
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Each somite pair corresponds to a myotome in vertebrates or to an adult segment in annelids and arthropods.
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These two body segments are connected with a small waist called the pedicle or the pregenital somite.
CreationWiki - Recent changes [en]
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In the direct development Bateson showed that the three divisions of the coelom arise as pouches constricted off from the archenteron or primitive gut, thus resembling the development of the mesoblastic somites of _Amphioxus_.
Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy"
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Indeed, there is: somites in metameric animals usually form sequentially from a posterior growth zone, a process found again in all three branches of the bilaterians.
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As an entity, the caverns contain a matchless array of spectacular limestone formations: stalagmites, stalactites and the rarer epsomite needles, soda straws, cave pearls, and lily pads.
Travel Guide: the Incredible Natural Landscapes in the U.S.A. (Part 1)
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These pairs of "cubes" of the mesoderm are the first traces of the primitive segments or somites, the so-called "protovertebrae.
The Evolution of Man — Volume 1
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They have a number of body segments (known as somites), which are sometimes fused to form rigid areas, or are free but linked to each other by flexible areas.
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This takes the vertebrate embryo up to the stage at which it has become recognizably vertebrate, with somites, notochord, and neural tube.
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The somites give rise to the vertebrae, to the muscles of the trunk and limbs, and to the dermis of the skin.
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Melts of these metasomites were volatile rich and hence ascended rapidly through the lithosphere, forming the lamprophyre magmas.
