
Introduction:
Urinary tract infection is an infection which affects the urinary system of the body. If the infection occurs at the lower urinary tract, then it is called as cystitis, whereas infection occurs in the kidney then it is called as pyelonephritis.

Answer to Problem 1MCQ
Correct answer:
Cystitis is an infection of the urinary bladder. Therefore, option (a) is correct.
Option (a) is given as “bladder”.
Explanation of Solution
Justify the reason for the correct statement:
The UTI can occur at various sites, it infection occur in urinary bladed then it is called as cystitis, in kidney then it is called as pyelonephritis, and urethra then it is called as urethritis. The most common causative agents of cystitis/pyelonephritis are Escherichia coli, Staphylococcus saprophyticus, and Enterococcus.
Hence, option (a) is correct.
Justify the reasons for the incorrect statements:
Option (b) is given as “urethra”.
Cystitis is not an infection of the urethra. Hence, it is a wrong answer.
Option (c) is given as “kidney”.
Infection in the kidney is called as pyelonephritis. Hence, it is a wrong answer.
Option (d) is given as “vagina”.
Infection in the vagina is called as vaginitis. Hence, it is a wrong answer.
Hence, options (b), (c), and (d) are incorrect.
Cystitis is an infection of the urinary bladder.
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Chapter 23 Solutions
Microbiology: A Systems Approach
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