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Introduction to Disorders of Kidney Tubules

By

L. Aimee Hechanova

, MD, Texas Tech University Health Sciences Center, El Paso

Last full review/revision Nov 2020| Content last modified Nov 2020
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Topic Resources

The kidneys filter and cleanse the blood. They also maintain the body’s balance of water, electrolytes (such as sodium, potassium, bicarbonate, and chloride), and nutrients in the blood.

The kidneys begin these tasks by filtering the blood as it flows through microscopic tufts of blood vessels with small pores (glomeruli). This process moves a large amount of water and electrolytes and other substances into the kidney tubules. The cells lining these tubules reabsorb and return needed water, electrolytes, and nutrients (such as glucose and amino acids) to the blood. The cells also transport waste products and drugs from the blood into the fluid (which becomes urine) as it flows through the tubules. The kidneys also add hormones that maintain blood supply ( erythropoietin), blood pressure, and electrolyte balance.

Viewing the Urinary Tract

Viewing the Urinary Tract

Disorders that interfere with the transport functions of the cells lining the tubules are called tubular disorders or transport disorders. They include

These tubular disorders are often hereditary and many are present at birth. Some have other causes such as drugs or other diseases.

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Urethritis
Urethritis is an infection of the urethra, the tube that transports urine out of the body from the bladder. Many organisms can cause urethritis. Which of the following is an organism that commonly causes urethritis in men, but is more likely to infect reproductive organs in women?  
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