the usually crescent-shaped opening of the urinary bladder into the urethra, placed at the anteroinferior angle (apex) of the urinary bladder trigone [ MP:0011782 http://www.informatics.jax.org/accession/anna ]
Term information
pheno_slim
the usually crescent-shaped opening of the urinary bladder into the urethra, placed at the anteroinferior angle (apex) of the urinary bladder trigone
ostium orificium internum
internal urethral orifice of urinary bladder
ostium urethrae internum
internal meatus of urethra
orificium urethrae internum
internal urethral ostium
vesicourethral orifice
Term relations
- orifice and part of some urethra and connects some bladder lumen and connects some lumen of urethra
- urethral opening
- mesoderm-derived structure
- part of some urethra
- connects some lumen of urethra
- connects some bladder lumen