Final answer:
The genitourinary system includes organs that filter waste products and excess water from the blood and excrete them as urine. The rectum is not a component of the genitourinary system.
Step-by-step explanation:
The genitourinary system is a combination of the reproductive system and the urinary system. It includes organs such as the kidneys, ureters, urinary bladder, and urethra. These organs work together to filter waste products and excess water from the blood and excrete them as urine.
Out of the options given, the rectum is NOT a component of the genitourinary system. The rectum is part of the digestive system and is responsible for storing solid waste before it is eliminated from the body through the anus.