The body's secret filters
Chapter 1
The anatomy of a cellular filter
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Chapter 2
Chemical balance and body harmony
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Chapter 3
From ancient mummies to modern dialysis
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YOUR GOAL
Master of The body's secret filters
Ch 2 · Chemical balance and body harmony
Fun Fact
Seawater survival: Humans cannot drink seawater because our kidneys require more fresh water to flush out that much salt than the seawater itself provides.
Glossary
homeostasis (noun)
The tendency of a physiological system to maintain internal stability while adjusting to external changes. These filtration organs process about two hundred quarts of blood daily to maintain this vital internal equilibrium.
The tendency of a physiological system to maintain internal stability while adjusting to external changes. These filtration organs process about two hundred quarts of blood daily to maintain this vital internal equilibrium.
Quiz
What are the microscopic water channels in kidney cells called that open in response to dehydration?
Quiz
Which chemical base do the kidneys reabsorb from fluid to neutralize acids in the blood?
Quiz
In what year did researchers first discover the blood-pressure-regulating kidney enzyme renin?
Quiz
What is the strictly regulated, healthy pH range for human blood maintained by the kidneys?
Quiz
Which hormone from the brain tells the kidneys to conserve water when you are dehydrated?