🦠microbiology review

Urinary system

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

The urinary system consists of organs responsible for producing, storing, and eliminating urine. It includes the kidneys, ureters, bladder, and urethra.

5 Must Know Facts For Your Next Test

  1. The kidneys filter blood to remove waste products and produce urine.
  2. Ureters are tubes that transport urine from the kidneys to the bladder.
  3. The bladder is a muscular sac that stores urine until it is ready to be excreted.
  4. The normal microbiota of the urinary tract primarily consists of non-pathogenic bacteria in the distal urethra.
  5. Infections in the urinary system can ascend from the urethra to the bladder (cystitis) or further up to the kidneys (pyelonephritis).

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