Send us a Message

Submit Data |  Help |  Video Tutorials |  News |  Publications |  Download |  REST API |  Citing RGD |  Contact   


The Basic subset of the UBERON integrated, cross-species anatomy ontology is downloaded weekly from For more information about this ontology see the "About" page on the UBERON website at

Term:internal urethral orifice
go back to main search page
Accession:UBERON:0012242 term browser browse the term
Definition:The usually crescent-shaped opening of the urinary bladder into the urethra, placed at the anteroinferior angle (apex) of the urinary bladder trigone.
Synonyms:exact_synonym: internal meatus of urethra;   internal urethral orifice of urinary bladder;   orificium urethrae internum;   ostium orificium internum;   ostium urethrae internum;   vesicourethral orifice
 related_synonym: internal urethral ostium;   internal urinary meatus
 xref: FMA:85263;   SCTID:362228001;   Wikipedia:Internal_urethral_orifice

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
      anatomical cluster 0
        lower urinary tract 0
          urethral opening 0
            internal urethral orifice 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
                        mesoderm 0
                          intermediate mesoderm 0
                            urogenital fold 0
                              embryonic urethral groove 0
                                urethra 0
                                  internal urethral orifice 0
paths to the root