| constriction | The act of constricting. (12 Dec 1998) |
|---|---|
| constriction ring | The equatorial ring of microfilaments that diminishes in diameter probably both by contraction and disassembly as cytokinesis proceeds. (18 Nov 1997) |
| constriction, pathologic | The condition of an anatomical structure's being constricted beyond normal dimensions. (12 Dec 1998) |
| constrictions of ureter | Normal physiological narrowings of the ureter observable in a pyelogram; the uppermost occurs at the origin of the ureter from the renal pelvis; a second occurs as the ureter crosses the iliac vessels and pelvic brim; the inferiormost occurs as the ureter penetrates the wall of the urinary bladder. (05 Mar 2000) |