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*  Cardiac neural crest cells
... to the third somites (clusters of mesoderm that will become skeletal muscle, vertebrae and dermis). The cardiac neural crest ...
*  Somite
A somite is a division of the body of an animal or embryo. Somites are bilaterally paired blocks of paraxial mesoderm that form ... Somite formation can be induced by Noggin-secreting cells. The number of somites is species dependent and independent of embryo ... The somites appear on both sides of the neural tube simultaneously. Experimental manipulation of the developing somites will ... In current crustaceans, several of those somites may be fused.[citation needed] In some older texts, somites are referred to as ...
*  Nyctemera coleta
Anterior somites yellowish. Each somite is black and marked with short dorsal and lateral white streaks. Pupa yellowish and ...
*  Tariccoia
The body is constricted at the two or three thoracic somites, so the animal gives the impression to have a waist. The pygidium ... The species share 3 thoracic somites, an entire margin and a mid-ridge on the pygidium. T. arrusensis has been collected from ... T. arrusensis differs from Buenaspis forteyi, that has a cephalon and pygidium that are not wider than its 6 thoracic somites. ... The dorsal exoskeleton consists of a cephalon, a pygidium and two or three thoracic somites with articulating half-rings, all ...
*  Procaris hawaiana
The fourth somite has the pleura rounded, those of the fifth end in a bluntly rounded top. The sixth somite is approximately ... The abdominal somites are smooth. The first has the pleura large and rounded. The pleura of the second overlap both those of ... The third somite is noticeable in that the posteromedian part is hood-like prolonged posteriorly and reaches beyond the middle ... The telson is distinctly longer than the sixth abdominal somite. It is elongate triangular and has two pairs of dorsal spines. ...
*  Ochetellus glaber
Thirteen differentiated somites are present. Spinules (small spines or thorns) are more prominent at the posterior end. The ...
*  Vertebral column
Somite formation begins around the third week when the embryo begins gastrulation and continues until around 52 somites are ... In humans the first four somites are incorporated in the base of the occipital bone of the skull and the next 33 somites will ... The somites are spheres, formed from the paraxial mesoderm that lies at the sides of the neural tube and they contain the ... The remaining posterior somites degenerate. During the fourth week of embryogenesis, the sclerotomes shift their position to ...
*  Robert Wiedersheim
Superfluous embryonic notochord and associated somites. Embryonic cervical, lumbar, and sacral ribs. The thirteenth rib of the ...
*  Clock and wavefront model
The anterior somites are not affected. In one study, this phenotype was mimicked by Shh inhibitors, and timely somite formation ... forming a somite boundary and resetting the process for the next somite. In particular, the cyclic activation of the Notch ... Somitogenesis is the process by which somites, blocks of mesoderm that give rise to a variety of connective tissues, are formed ... Intrinsic expression of "clock genes" must oscillate with a periodicity equal to the time necessary for one somite to form, for ...
*  Anomis
Larva with non-swollen thoracic somites. Anomis albipunctillum Dognin 1912 Anomis albipunctula Hampson 1926 Anomis albitarsata ...
*  Trabala vishnou
First somite is black and grey, other somites are grey. There are paired dorsal and lateral black spots on each somite, from ... The larva has a yellow head spotted with red and its body colour is brownish grey with long lateral tufts on each somite. ... Spots on the thoracic somites are coalescing. Instead of usual coloured caterpillars, there are two morphs which can be found. ...
*  Mesoderm
The somitomeres organize into somites which grow in pairs. In the fourth week the somites lose their organization and cover the ... Finally, the neural tube also secretes neurotrophin 3 (NT-3), so that the somite creates the dermis. Boundaries for each somite ... Yusuf, Faisal (2006). "The eventful somite: Patterning, fate determination and cell division in the somite". Anatomy and ... each somite will form its own sclerotome that will differentiate into the tendon cartilage and bone component. Its myotome will ...
*  OSR1
... developing somites, distal mandible and developing eye. The expression of Osr1 is negatively regulated by Runx2 and Ikzf1. ...
*  Somitogenesis
These immature somites then are compacted into an outer layer (the epithelium) and an inner mass (the mesenchyme). The somites ... The anterior somites are not affected. In one study, this phenotype was mimicked by Shh inhibitors, and timely somite formation ... The cells within each somite are specified based on their location within the somite. In addition, they retain the ability to ... Because all developing embryos of a particular species form the same number of somites, the number of somites present is ...
*  Plusiodonta coelonota
Somites 7 and 11 with pinkish patches. Head reddish. The larvae feed on Stephania japonica and Smilax australis plants. "Snake ...
*  Green-head ant
The hairs measure 0.02 to 0.18 mm (0.00079 to 0.00709 in), with the longest found on the flagelliform and on all somites; the ... They appear similar to sub-mature larvae, but the diameter differs, gradually decreasing from the fifth somite to the anterior ... On the thorax and abdomen somite, they measure 0.2 mm (0.0079 in). On the flagelliform and ventral portion of the abdominal ... hairs on the somites, however, become sparse. The tips of the hairs on the head are simple or frayed, and overall the hairs ...
*  Hamburger-Hamilton stages
Somites form with surprising regularity every 90 minutes. Stage 10 embryos have 10 somites, and as a rule of thumb, the embryo ... Stage 11 embryos have 13 somites, Stage 12 embryos have 16, etc.). The authors note, however, that beyond 22 somites (HH14) it ... with most researchers relying on somite number or age to identify the stage of development. Hamburger and Hamilton aimed to ... gains 3 somites during each stage (i.e. ...
*  Eudocima homaena
Fourth and fifth somites form ocellu with yellow iris and azure-blue black edged pupil. Somites 8 and 9 with irregular yellow ... A dorsal tubercle found on 11th somite. Pupa orange colored, roughened and burnished. The larvae feed on Achyranthes, Cocculus ... Larva purplish brown with many blue specks and large yellow patch on 3rd, 4th and 5th somites. ...
*  Ophiusa disjungens
Small pared dorsal prominences found on 11th somites. The larvae feed on various Myrtaceae species, including Eucalyptus, ...
*  Cumacea
The five posterior somites of the thorax form the pereon. The pleon (abdomen) consists of six cylindrical somites. The first ... The carapace of a typical cumacean is composed of several fused dorsal head parts and the first three somites of the thorax. ...
*  Theretra latreillii
A pale lateral line runs on thoracic somites. Ocellus on 4th somite is whitish, centered with a black ring on an ochreous ...
*  Prenatal development
day 18 of fertilization.) Somites, the divisions of the future vertebra, form. (day 20 of fertilization.) Primitive heart tube ...
*  Scorpion
Ventrally somites 3 to 7 are armoured with matching plates called sternites. Ventrally somites 1 and 2 are more complex; the ... The next four somites, 3 to 6, each bears a pair of spiracles; they serve as openings for the scorpion's respiratory organs, ... The 7th and last somite do not bear appendages or any other significant external structures. The metasoma is commonly known as ... It consists of the anterior seven somites (segments) of the opisthosoma, each covered dorsally by a sclerotosed plate, its ...
*  Hirudo orientalis
There are complete somite fiveannulate. Body surface is covered with numerous papillae. There are five eye pairs. Sulcus is ...
*  Waptia
The abdomen is composed of five somites, all of which lack appendages except the last. The back-facing margins of these somites ... The thorax is divided into two groups of somites. The anterior group is composed of four somites, each with well-developed ... The last abdominal somite forks into a pair of flattened spatulate appendages (the uropods) that function as a tail fan (caudal ... The posterior thoracic group is made up of six somites, each possessing a pair of long multi-jointed appendages. The segments ...