Final answer:
Bacteria gain access to the female urinary tract through fecal contamination due to the close proximity of the anus and the urethra. Escherichia coli is the most common cause of urinary tract infections in women.
Step-by-step explanation:
Bacteria gain access to the female urinary tract through the close proximity of the anus and the urethra, which allows for fecal contamination. The most common cause of urinary tract infections in women is Escherichia coli, which is introduced to the urethra in fecal matter. Good hygiene practices can help reduce the risk of urinary tract infections.