Quiz: Introduction to the Urinary System

1. The urinary system is sometimes referred to as the excretory system because one aspect of its function is to rid the body of waste products.
   True False
2. The organs of the urinary system are the only ones that contribute to the excretory function.
   True False
3. The urinary system controls red blood cell production by secreting the enzyme renin.
   True False
4. The kidneys are the organs that filter the blood, remove the wastes, and excrete the wastes in the urine.
   True False
5. The cortex and medulla make up the parenchyma, or functional tissue, of the kidney, which contains over a million nephrons.
   True False
6. The renal pelvis is a large cavity that collects the urine as it is produced.
   True False
7. The main function of the inner layer of the ureter, the mucosa, is peristalsis to propel the urine.
   True False
8. The internal and external urethral sphincters control the flow of urine through the urethra.
   True False