somite
IPA: sʌmaɪt
noun
- (embryology) One of the paired masses of mesoderm distributed along the sides of the neural tube that will eventually become dermis, skeletal muscle, or vertebrae.
- (anatomy) A metamere, one of a series of segments, arranged longitudinally, of which some animals are composed.
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Examples of "somite" in Sentences
- Somites are chevron shaped past the cloaca.
- The five posterior somites of the thorax form the pereon.
- The next tissues to enter are the notochord and somite precursors.
- The ovipositor or penis is withdrawn into the first opisthosomal somite.
- The ventral side of the first abdominal somite has central lump or point.
- Embryos are carried in paired or single sacs attached to first abdominal somite.
- The coelom of the body forms from a split of the mesoderm along the somite axis.
- These two body segments are connected with a small waist called the pedicle or the pregenital somite.
- The somite pattern in the fish embryo is much less complex than the segment pattern of the Drosophila larva.
- When the wave of gene expression encounters a set of responsive cells, those cells are specified to become the next somite.
- The genes affecting somite subdivision by the horizontal myoseptum might represent members of these signalling processes (Figure 5G).
- In addition we have also demonstrated the physiological PNS potential of 8 weeks old NPs 7 days after implantation of the cells into the developing neural tube (NT) of 18-23 somite chick embryos in ovo.
- Pdx-1 is expressed in the mouse primitive gut as early as the 13 somite stage (E8. 5), about a day before endocrine gene expression and 1.5 days before the first morphologic evidence of pancreas organogenesis.
- The first segment, which is almost half-way down in the embryonic shield of the amniote, is the foremost of all; from this first somite is formed the first cervical vertebra with its muscles and skeletal parts.
- The current study was carried out to test whether any of the five major signaling pathways are regulated by tbx16 during two specific stages of mesoderm development: primitive red blood cell formation in the intermediate mesoderm and somite formation in the tail paraxial mesoderm.