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Questions and Answers
What is the primary location where sodium and bicarbonate are reabsorbed back into the bloodstream?
What is the primary location where sodium and bicarbonate are reabsorbed back into the bloodstream?
- Distal convoluted tubule
- Thick ascending limb of the Loop of Henle (correct)
- Collecting duct
- Descending limb of the Loop of Henle
Which of the following ions enter the thick ascending limb compartment of the Loop of Henle via the NKCC2 transporter?
Which of the following ions enter the thick ascending limb compartment of the Loop of Henle via the NKCC2 transporter?
- Chloride only
- Sodium only
- Sodium, potassium, and chloride in specific ratios (correct)
- Potassium only
In the process of selective reabsorption in the proximal convoluted tubule, how is glucose reabsorbed into the blood?
In the process of selective reabsorption in the proximal convoluted tubule, how is glucose reabsorbed into the blood?
- Through facilitated diffusion
- By exocytosis
- By active transport (correct)
- By passive diffusion
What enzyme catalyzes the dehydration of carbonic acid into water and carbon dioxide in the lumen-urine within the PCT?
What enzyme catalyzes the dehydration of carbonic acid into water and carbon dioxide in the lumen-urine within the PCT?
What happens to hydrogen ions in the lumen-urine when bound to bicarbonate inside the proximal convoluted tubule?
What happens to hydrogen ions in the lumen-urine when bound to bicarbonate inside the proximal convoluted tubule?
Which part of the nephron is responsible for reabsorption of approximately 80% of the glomerular filtrate via selective reabsorption?
Which part of the nephron is responsible for reabsorption of approximately 80% of the glomerular filtrate via selective reabsorption?
What is the primary mechanism by which water and carbon dioxide enter the PCT compartment in the nephron?
What is the primary mechanism by which water and carbon dioxide enter the PCT compartment in the nephron?
Which segment of the nephron has thin walls, making them permeable to water and allowing urea to enter the filtrate?
Which segment of the nephron has thin walls, making them permeable to water and allowing urea to enter the filtrate?
Which process actually forms water and carbon dioxide from carbonic acid within the PCT in the nephron?
Which process actually forms water and carbon dioxide from carbonic acid within the PCT in the nephron?
In the Loop of Henle, which region is the most concentrated due to the transport of chloride ions and free passing of sodium ions?
In the Loop of Henle, which region is the most concentrated due to the transport of chloride ions and free passing of sodium ions?
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