What does the Sclerotome form?
What does the Sclerotome form?
The sclerotome forms the vertebrae and the rib cartilage and part of the occipital bone; the myotome forms the musculature of the back, the ribs and the limbs; the syndetome forms the tendons and the dermatome forms the skin on the back.
What is the Sclerotome of the mesoderm somite?
The portion of the somite that gives rise to these cells is called the sclerotome, and these mesenchymal cells ultimately become the cartilage cells (chondrocytes) of the vertebrae and part (if not all) of each rib (Figures 14.2 and 14.7).
Where does the Sclerotome come from?
The sclerotome. The sclerotome, which is the origin of the axial skeleton, is formed from the ventromedial part of the somite (reviewed in Monsoro-Burq, 2005). Sclerotomal induction entails an epithelial-to-mesenchymal transformation of the relevant somitic cells and their detachment from the epithelial somite.
What is Presomitic mesoderm?
The presomitic mesoderm (PSM) is a mesoderm-derived mesenchymal tissue located on both sides of the neural tube At the second phase of somitogenesis, the anterior part of the presomitic mesoderm (PSM) forms the presegmented somitic mesenchyme, which lies anterior to the determination front and contains cells that have …
What is somite in embryo?
somite, in embryology, one of a longitudinal series of blocklike segments into which the mesoderm, the middle layer of tissue, on either side of the embryonic spine becomes divided. Collectively, the somites constitute the vertebral plate.
What’s the mesoderm?
mesoderm, the middle of the three germ layers, or masses of cells (lying between the ectoderm and endoderm), which appears early in the development of an animal embryo.
Where is the mesoderm?
The mesoderm is the middle layer of the three germ layers that develop during gastrulation in the very early development of the embryo of most animals. The outer layer is the ectoderm, and the inner layer is the endoderm. The mesoderm forms mesenchyme, mesothelium, non-epithelial blood cells and coelomocytes.
What forms paraxial mesoderm?
Paraxial mesoderm, also known as presomitic or somitic mesoderm is the area of mesoderm in the neurulating embryo that flanks and forms simultaneously with the neural tube.
