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Understanding the Human Urinary System

Apr 22, 2025

Anatomy of the Urinary System

Overview

  • The urinary system filters blood and creates urine as a waste by-product.
  • Main organs: Kidneys, renal pelvis, ureters, bladder, urethra.

Functions of the Urinary System

  • Filters blood to remove waste.
  • Regulates chemicals like potassium and sodium and maintains water balance.
  • Produces urine from urea, water, and other waste products.

Kidneys

  • Location: Below the ribs, middle of the back.
  • Functions:
    • Remove waste products and drugs.
    • Balance body fluids.
    • Release hormones for blood pressure regulation.
    • Control red blood cell production.
    • Regulate acid-base balance and conserve fluids.
  • Structure involves nephrons (glomerulus and renal tubule).

Ureters

  • Function: Carry urine from kidneys to the bladder.
  • Movement: Muscles in walls tighten and relax to move urine to the bladder.

Bladder

  • Location: Lower abdomen.
  • Structure: Triangle-shaped, hollow organ.
  • Function: Stores urine and releases it via the urethra.
  • Can store up to two cups of urine for 2-5 hours.

Sphincter Muscles

  • Function: Prevent urine leakage by closing tightly around bladder opening.

Nerves in the Bladder

  • Role: Alert when to urinate.

Urethra

  • Function: Allows urine to pass outside the body.

Facts about Urine

  • Healthy urine: Pale straw or transparent yellow.
  • Darker urine indicates dehydration or possible liver issues.
  • Pink/red urine may indicate blood presence.

Related Medical Specialties and Facilities

  • Specialties: Gynecology, Obstetrics, Women's Health.
  • Treatment Centers: Howard County Medical Center, Sibley Memorial Hospital, Suburban Hospital.

Additional Information

  • Importance of research in medical advancements and treatment development.

Contact and Support

  • Various contact numbers provided for Maryland, outside Maryland, and internationally.
  • Language assistance available in multiple languages including Spanish, French, and Chinese.