Final answer:
The sites where urinary stones are most likely to obstruct the urinary system are at the ureteral-urethral junction. The ureteral muscle fiber attachments into the bladder help prevent backflow of urine through the ureteral-bladder junction. The volume of urine in the bladder that usually causes the urge to urinate is around 200-400 ml. Total bladder capacity ranges from 400-600 ml. Absorption or leakage of urine wastes out of the urinary system is prevented by the cellular characteristics of the transitional epithelium.
Step-by-step explanation:
The sites where urinary stones are most likely to obstruct the urinary system are at the ureteral-urethral junction.
The ureteral muscle fiber attachments into the bladder help prevent backflow of urine through the ureteral-bladder junction.
The volume of urine in the bladder that usually causes the urge to urinate is around 200-400 ml.
Total bladder capacity ranges from 400-600 ml. Absorption or leakage of urine wastes out of the urinary system is prevented by the cellular characteristics of the transitional epithelium.