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The part of the nephron having the greatest glucose concentration is the
- a)loop of Henle
- b)Collecting duct
- c)Bowman’s capsule
- d)Distal Convoluted tubule.
Correct answer is option 'C'. Can you explain this answer?
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The part of the nephron having the greatest glucose concentration is t...
Understanding the Nephron Structure
The nephron is the functional unit of the kidney, responsible for filtering blood and forming urine. It consists of several parts, each with distinct roles in the reabsorption and secretion of various substances.
Glucose Reabsorption in the Nephron
The primary site for glucose reabsorption is the proximal convoluted tubule (PCT), which is part of Bowman’s capsule. This is where the concentration of glucose is the highest.
Why Bowman’s Capsule Contains the Highest Glucose Concentration
- Filtration Process:
- Blood is filtered in Bowman’s capsule, allowing small molecules like glucose to pass into the nephron.
- Initial Glucose Presence:
- The filtrate in Bowman’s capsule contains glucose at the same concentration as it exists in plasma, around 100-120 mg/dL.
- Reabsorption Mechanism:
- The proximal convoluted tubule reabsorbs approximately 99% of the glucose via specific transport proteins (SGLT2). However, during this process, the glucose concentration decreases as it is actively transported back into the bloodstream.
Comparative Analysis of Nephron Parts
- Loop of Henle:
- Primarily involved in water and sodium reabsorption; minimal glucose is present.
- Distal Convoluted Tubule:
- Further reabsorption occurs, but glucose levels are already low due to prior reabsorption in the PCT.
- Collecting Duct:
- Mainly involved in water and electrolyte balance, with negligible glucose.
Conclusion
Ultimately, the part of the nephron with the greatest glucose concentration is Bowman’s capsule, as it is the initial site of filtration where glucose enters the nephron.
The nephron is the functional unit of the kidney, responsible for filtering blood and forming urine. It consists of several parts, each with distinct roles in the reabsorption and secretion of various substances.
Glucose Reabsorption in the Nephron
The primary site for glucose reabsorption is the proximal convoluted tubule (PCT), which is part of Bowman’s capsule. This is where the concentration of glucose is the highest.
Why Bowman’s Capsule Contains the Highest Glucose Concentration
- Filtration Process:
- Blood is filtered in Bowman’s capsule, allowing small molecules like glucose to pass into the nephron.
- Initial Glucose Presence:
- The filtrate in Bowman’s capsule contains glucose at the same concentration as it exists in plasma, around 100-120 mg/dL.
- Reabsorption Mechanism:
- The proximal convoluted tubule reabsorbs approximately 99% of the glucose via specific transport proteins (SGLT2). However, during this process, the glucose concentration decreases as it is actively transported back into the bloodstream.
Comparative Analysis of Nephron Parts
- Loop of Henle:
- Primarily involved in water and sodium reabsorption; minimal glucose is present.
- Distal Convoluted Tubule:
- Further reabsorption occurs, but glucose levels are already low due to prior reabsorption in the PCT.
- Collecting Duct:
- Mainly involved in water and electrolyte balance, with negligible glucose.
Conclusion
Ultimately, the part of the nephron with the greatest glucose concentration is Bowman’s capsule, as it is the initial site of filtration where glucose enters the nephron.
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C is a correct answer
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The part of the nephron having the greatest glucose concentration is thea)loop of Henleb)Collecting ductc)Bowman’s capsuled)Distal Convoluted tubule.Correct answer is option 'C'. Can you explain this answer?
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