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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:premolar tooth
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Accession:UBERON:0007120 term browser browse the term
Definition:The premolar teeth or bicuspids are transitional teeth located between the canine and molar teeth.
Comment:[taxon-note] "In humans, there are two premolars per quadrant, making eight premolars total in the mouth. They have at least two cusps. Premolars can be considered as a 'transitional tooth' during chewing, or mastication. It has properties of both the anterior canines and posterior molars, and so food can be transferred from the canines to the premolars and finally to the molars for grinding, instead of directly from the canines to the molars. The premolars in humans are the maxillary first premolar, maxillary second premolar, mandibular first premolar, and the mandibular second premolar. There is always one large buccal cusp, especially so in the mandibular first premolar. The lower second premolar almost always presents with two lingual cusps. Premolar teeth by definition are permanent teeth distal to the canines preceded by deciduous molars. In primitive mammals there are four premolars per quadrant. The most mesial two have been lost in Catarrhines. Paleontologists refer to human premolars as Pm3 and Pm4"
Synonyms:narrow_synonym: secondary premolar tooth
 related_synonym: bicuspid;   bicuspid teeth;   bicuspid tooth;   bicuspids;   biscuspid;   dens premolaris;   dentes premolares;   mandibular bicuspid;   maxillary bicuspid;   maxillary premolar;   pm3 (dentistry);   praemolares;   premolar;   premolar teeth;   premolars;   præmolares
 xref: FMA:55637;   GAID:1261;   MESH:D001641;   NCI:C32201;   SCTID:304572005;   UMLS:C1704302;   Wikipedia:Premolar
 external_ontology: never_in_taxon NCBITaxon:337687


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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
          ectoderm-derived structure 0
            calcareous tooth 0
              molariform tooth 0
                premolar tooth 0
                  lower premolar tooth + 0
                  premolar 1 + 0
                  premolar 2 + 0
                  premolar 3 0
                  premolar tooth 4 + 0
                  premolar tooth 5 + 0
                  primary premolar tooth + 0
                  secondary premolar tooth + 0
                  upper premolar tooth + 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
              embryo 0
                embryonic structure 0
                  embryonic tissue 0
                    germ layer / neural crest 0
                      germ layer 0
                        ectoderm 0
                          ectodermal placode 0
                            non-neurogenic ectodermal placode 0
                              tooth placode 0
                                tooth bud 0
                                  calcareous tooth 0
                                    molariform tooth 0
                                      premolar tooth 0
                                        lower premolar tooth + 0
                                        premolar 1 + 0
                                        premolar 2 + 0
                                        premolar 3 0
                                        premolar tooth 4 + 0
                                        premolar tooth 5 + 0
                                        primary premolar tooth + 0
                                        secondary premolar tooth + 0
                                        upper premolar tooth + 0
paths to the root