Final answer:
During a cystoscopy, the bladder is examined, which is a hollow and muscular organ that stores urine.
Step-by-step explanation:
The body structure examined during a cystoscopy is the bladder. A cystoscopy is a medical procedure that allows a doctor to examine the lining of the bladder and the urethra. The bladder is a hollow and muscular organ that collects and stores urine until it is ready to be expelled from the body. It is connected to the kidneys by the ureters, which are tube-like structures that carry urine from the kidneys to the bladder. The anatomy of the bladder in males also involves proximity to the prostate, which is located inferior to the bladder.