Final answer:
Stones can migrate through the urinary system if they are small enough.
Step-by-step explanation:
If stones are small enough, they can migrate through the urinary system. The urinary system consists of the kidneys, ureters, bladder, and urethra. When stones are small enough, they can pass through these structures and be excreted in the urine. However, if the stones are too large, they may cause blockages, leading to pain and other complications.