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CROSS-SPECIES ANATOMY - ANNOTATIONS

The Basic subset of the UBERON integrated, cross-species anatomy ontology is downloaded weekly from http://berkeleybop.org/ontologies/uberon/basic.obo. For more information about this ontology see the "About" page on the UBERON website at http://uberon.github.io/about.html.
Term:skeletal tissue
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Accession:UBERON:0004755 term browser browse the term
Definition:A specialized form of connective tissue in which the extracellular matrix is firm, providing the tissue with resilience, and/or mineralized and that functions in mechanical and structural support.[VSAO].
Comment:Four classes of mineralized tissues are found in vertebrates: bone, cartilage, dentine, and enamel. We think of cartilage and bone as skeletal tissues and of enamel and dentine as dental tissues, but enamel and dentine arose evolutionarily together with bone as skeletal tissues in the dermal skeleton (exoskeleton) of early vertebrates. Scales and teeth of sharks are examples of dermal skeletal elements that are still composed of the three ancient components-enamel, dentine, and bone. Cartilage, on the other hand, provided the basis for the second vertebrate skeletal system, the endoskeleton (Smith and Hall, 1990; Hall, 1998a,b). some invertebrate skeletal tissues have surprisingly bone-like features. Examples include chondrocytes interconnected by cell processes in cephalopod cartilages (Cole and Hall, 2004a,b), and the calcium phosphate layer in the shells of brachiopods (Rodland et al., 2003). However, neither bone nor mineralized cartilage have been found in invertebrates. Editors notes: TODO - develops_from
Synonyms:xref: EMAPA:37744;   MA:0003047;   SCTID:309311006;   VSAO:0000015;   XAO:0004038;   ZFA:0005619


show annotations for term's descendants           Sort by:
Term paths to the root
Path 1
Term Annotations click to browse term
  UBERON ontology 0
    anatomical entity 0
      material anatomical entity 0
        anatomical structure 0
          multicellular anatomical structure 0
            organ 0
              skeletal element 0
                skeletal tissue 0
                  bone tissue + 0
                  cartilage tissue + 0
                  chondroid tissue 0
                  mineralized skeletal tissue + 0
                  nacre 0
                  non-mineralized chondroid tissue + 0
                  odontoid tissue + 0
Path 2
Term Annotations click to browse term
  UBERON ontology 0
    anatomical entity 0
      material anatomical entity 0
        anatomical structure 0
          multicellular anatomical structure 0
            multicellular organism 0
              anatomical system 0
                organ system subdivision 0
                  skeletal system 0
                    skeletal element 0
                      skeletal tissue 0
                        bone tissue + 0
                        cartilage tissue + 0
                        chondroid tissue 0
                        mineralized skeletal tissue + 0
                        nacre 0
                        non-mineralized chondroid tissue + 0
                        odontoid tissue + 0
paths to the root