Assertion: ureter's orifice | /r/HasProperty | small
Facets:
Source sentences:
text: The intramural part of the urethra (preprostatic urethra) varies in diameter and length, depending on whether the bladder is filling (bladder neck is tonically contracted so the internal urethral orifice is small and high; the filling internal urethral orifice) or emptying (the neck is relaxed so the orifice is wide and low; the emptying internal urethral orifice).