urethra The fibromuscular tubular canal through which urine is discharged from the bladder to the exterior via the external urinary meatus; in males, the urethra is joined by the ejaculatory ducts and serves as a passageway for semen during ejaculation, as well as a canal for urine during voiding; in females, the urethra is shorter and emerges above the vaginal opening. VHOG:0001264 EV:0100099 MA:0000379 BTO:0001426 UMLS:C0041967 XAO:0000153 NCIT:C12417 SCTID:302513006 MIAA:0000121 GAID:390 Wikipedia:Urethra galen:Urethra MESH:D014521 FMA:19667 CALOHA:TS-1132 MAT:0000121 EMAPA:30901 EFO:0000931 organ anatomical conduit mesoderm-derived structure