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Questions and Answers
What is the main function of the ascending limb of the loop of Henle?
What is the main function of the ascending limb of the loop of Henle?
What is the tonicity of the medullary interstitium at the renal papilla?
What is the tonicity of the medullary interstitium at the renal papilla?
What is the transfer mechanism of NaCl to the medullary interstitium in the ascending limb?
What is the transfer mechanism of NaCl to the medullary interstitium in the ascending limb?
What is the osmotic concentration of fluid leaving the ascending limb?
What is the osmotic concentration of fluid leaving the ascending limb?
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What creates an osmotic gradient in the loop of Henle?
What creates an osmotic gradient in the loop of Henle?
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What is the main function of the ascending limb of the loop of Henle?
What is the main function of the ascending limb of the loop of Henle?
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What is the osmotic concentration of fluid leaving the ascending limb?
What is the osmotic concentration of fluid leaving the ascending limb?
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What creates an osmotic gradient in the loop of Henle?
What creates an osmotic gradient in the loop of Henle?
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What is the tonicity of the medullary interstitium at the renal papilla?
What is the tonicity of the medullary interstitium at the renal papilla?
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How does the loop of Henle act as a counter current multiplier?
How does the loop of Henle act as a counter current multiplier?
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Study Notes
The Loop of Henle
- The main function of the ascending limb of the loop of Henle is to concentrate urine by removing salt and water from the filtrate.
- The medullary interstitium at the renal papilla is hypertonic.
Sodium Chloride Transfer
- NaCl is transferred to the medullary interstitium in the ascending limb through a cotransport mechanism, where Na+ and Cl- ions are transported together.
Osmotic Concentration and Gradient
- The osmotic concentration of fluid leaving the ascending limb is hypotonic.
- The osmotic gradient in the loop of Henle is created by the removal of salt and water from the filtrate in the ascending limb.
Counter Current Multiplier
- The loop of Henle acts as a counter current multiplier because the ascending limb removes salt and water, while the descending limb reabsorbs water, creating a concentration gradient.
- This concentration gradient allows the kidney to concentrate urine and remove excess salt and water from the body.
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Description
Test your knowledge of the counter current multiplier system, as found in the loop of Henle in the kidney. Learn about the U-shaped tube, counter current stream, and the source of energy involved in this process.
