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Understanding the Urinary System: Functions, Organs, and Disorders

Learn about the urinary system's functions, organs like kidneys, ureters, bladder, and urethra, common disorders like kidney stones, kidney failure, cystitis, and career paths in this field.

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Understanding the Urinary System: Functions, Organs, and Disorders

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  1. The Urinary System Maintenance Systems Unit 5

  2. Basic Functions of the Urinary System • Regulates the composition and volume of the blood by removing and restoring selected amounts of water and solutes. • Eliminates water, nitrogenous wastes from the breakdown of protein, inorganic salts, and assists in eliminating heat and carbon dioxide.

  3. The Organs of the Urinary System • Kidneys (2) • Ureters (2) • Bladder • Urethra

  4. Kidneys • The kidneys are paired organs found laterally to the spinal canal in the upper left and right quadrants. • Their main function is to produce urine.

  5. The Ureters • The ureters are long, slender tubes which extend from the kidneys to the urinary bladder. • Their main function is to transport urine from the kidneys to the bladder.

  6. The Urinary Bladder • A sac-like structure found in the pelvic cavity. • Its main function is to hold urine.

  7. The Urethra • A small tube (about 2 inches in the female and 8 inches in males) which transports urine from the bladder to the outside of the body.

  8. Diseases and Disorders of the Urinary System

  9. Kidney Stones • Kidney stones are hard masses developed from crystals that separate from the urine within the urinary tract. • Usually, the first symptom of a kidney stone is extreme pain, which begins suddenly when a stone moves in the urinary tract and blocks the flow of urine.

  10. Kidney Stones continued Typically, a person feels a sharp, cramping pain in the back and side in the area of the kidney or in the lower abdomen. Sometimes nausea and vomiting occur. Later, pain may spread to the groin. Predisposing factors for kidney stones include dehydration, infection, obstruction, and genetics. Treatment includes medication to relieve the pain, forcing fluids, and sometimes surgical intervention such as lithotripsy.

  11. Kidney Failure • Kidney failure is the loss of the kidney’sability to perform their main function — eliminate excess fluid and waste material from the blood. • When the kidneys lose their filtering ability, dangerous levels of fluid and waste accumulate in the body. • Signs and symptoms include decreased urine output, fluid retention, drowsiness, shortness of breath, fatigue, confusion, seizures or coma in severe cases. • Treatment includes a modified diet, IV fluids, and dialysis until kidney function returns to normal.

  12. Cystitis • Cystitis is the inflammation of the urinary bladder caused by bacteria. • It is more common in women. • Signs and symptoms of cystitis include urgency, frequency, burning upon urination, dysuria, and possible urethral discharge. • It is treated with antibiotics.

  13. Careers Urologist Dialysis Technician Medical Lab Technician Medical Assistant

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