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Related to somite: neural crest


1. Any of the homologous segments that compose the body of certain animals, such as earthworms and lobsters, and are arranged in a longitudinal series.
2. A segmental mass of mesoderm in the vertebrate embryo, occurring in pairs along the notochord and developing into muscles and vertebrae.

[Greek sōma, body; see soma1 + -ite.]

so·mit′ic (sō-mĭt′ĭk) adj.


1. (Zoology) embryol any of a series of dorsal paired segments of mesoderm occurring along the notochord in vertebrate embryos. It develops into muscle and bone in the adult animal
2. (Zoology) zoology another name for metamere
[C19: from Greek sōma a body]
somital, somitic adj


(ˈsoʊ maɪt)

1. any of the longitudinal series of segments or parts into which the body of certain animals is divided; a metamere.
2. one of the thickened segments of tissue that occur in pairs along the back of the vertebrate embryo.
[1865–70; < Greek sôm(a) body]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.somite - one of a series of similar body segments into which some animals are divided longitudinallysomite - one of a series of similar body segments into which some animals are divided longitudinally
segment - one of the parts into which something naturally divides; "a segment of an orange"
References in periodicals archive ?
The following somatic parts of each crab were measured: maximum carapace width (CW; was always measured behind the third cephalothoracic spine), abdomen width for females (AW; obtained from the 5 th to 6th abdominal somite) and gonopod length for males (GL) to the nearest 0.1 mm using a Vernier caliper.
Closure of cranial neuropore occurs at about 25th day (8-20 somite stage) whereas the posterior neuropore closes at about 28th day (25 somite stage).
GFP expression in somite muscle was more intense in anterior somites than in posterior somites at early larval stages, but posterior expression increased gradually over time in later larval stages.
Many significant studies about somite fate were performed using the quail-chick cross-transplantation technique, and somite cross-transplantation has been employed to describe the origin of the brachial muscles (Beresford, 1983), identify a population of cells within the somite that give rise to the muscles of the back and a second population of cells that give rise to the limb musculature (Ordahl and Le Douarin, 1992), and the fate of the first somite (Huang et al., 1997).
A faint rectangular area is located on the eighth thoracic somite. No habitat data other than depth were given with the specimens I examined.
5, A and K): Abdomen six-segmented; dorsomedian spines on posterior margin of the 1st-5th abdominal somites; one pair of spines on posterolateral margins of 5th and 6th abdominal somites; 6th abdominal somite also with one pair of spines on lateroventral margin; pereiopods appeared.
Lassar, "Asymmetric localization of numb in the chick somite and the influence of myogenic signals," Developmental Dynamics, vol.
Abdomen of six somites, and telson free articulated, widest at third segment, which represents almost 3A of entire length; gradually narrowing from third somite to telson, which is obtusely rounded.
Male crabs have a thin and narrow abdomen and a pair of long thin pleopods (gonopods) on the ventral surface of the first abdominal somite. Female crabs have large and wide abdomens and four pairs of long setose pleopods from the second to the fifth abdominal somites (McLaughlin, 1980).
Tissues such as the liver, forebrain, lateral line (a sensory system found in aquatic vertebrates), otic vesicles, eyes, heart, and cranial and somite muscle appeared to be strongly affected by some of the compounds tested, but not others.