TA98 Entity Page, English,
ostium urethrae internum
| SECTION | Item or Ref ID | Value or text |
| Identification |
| TA code | A08.3.01.027 |
| Entity ID number | THA:3138 |
| FMA identifier | FMA:15938 |
| Type of entity | Immaterial entity |
| Language |
| TA98 Latin preferred term | ostium urethrae internum |
| TA98 English equivalent | internal urethral orifice |
| TA98 English synonym | internal urinary meatus |
| Properties |
 Male gender
|
This entity is male gender-specific. |
 Immaterial
|
This entity is an immaterial object (no mass). |
| Notes |
| TA98 footnote | Ostium urethrae internum This term describes the opening of the urethra from the bladder. However, superimposed lateral cystograms and voiding cystourethrograms show that the ostium in the bladder that is filling differs from the ostium in the bladder that is voiding. The bladder around the ostium urethrae accipiens usually forms a flat disc or baseplate, the pars intramuralis urethrae (bladder neck) is closed and the urethra is at its longest. With the onset of voiding the baseplate becomes progressively funnel-shaped and the bladder neck opens and becomes incorporated into the funnel so that the bladder appears to descend and the urethra to shorten. The ostium urethrae internum evacuans then lies some 20% closer to the ostium urethrae externum in the female, and at the basis prostatae in the male. |
| TA98 correction note | The two entries for this entity were made identical by adding the English synonym internal urinary meatus to the entry that did not already have it. |
| TA98 Hierarchy |
| A01.0.00.000 |
| A08.0.00.000 |
| A08.3.01.001 |
| A08.3.01.004 |
| A08.3.01.024 |
| A08.3.01.027 |
ostium urethrae internum
|
| FMA Taxonomy |
| FMA:62955 |
anatomical entity
|
| FMA:61775 |
physical anatomical entity
|
| FMA:67112 |
immaterial physical anatomical entity
|
| FMA:5897 |
anatomical space
|
| FMA:9338 |
anatomical conduit
|
| FMA:3724 |
anatomical orifice
|
| FMA:85263 |
internal urethral orifice
|
| FMA:15938 |
internal orifice of male urethra
|
| Date: 29.01.2013 |