The kidneys are of outstanding importance. They perform a number of homeostatic functions including filtration of plasma and elimination of metabolic waste products, regulation of the composition and volume of the extracellular fluid, and regulation of blood pressure. The kidneys are also endocrine organs. Test your basic knowledge of renal physiology by taking this simple quiz.
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(1) In the kidneys, most of the glucose present in the plasma ultrafiltrate is reabsorbed in this region of the proximal tubule:
(2) In the kidneys, 100% of the glucose filtered into the nephrons is reabsorbed across the walls of the proximal tubules and returned to the circulation via the peritubular capillaries. What percentage of the glucose is reabsorbed in the early proximal tubule (S1)?
(3) In the kidneys, 100% of the glucose filtered into the nephrons is reabsorbed across the walls of the proximal tubules and returned to the circulation via the peritubular capillaries. What percentage of the glucose is reabsorbed in the late proximal tubule (S3)?
(4) In the kidneys, glucose transport across the apical membrane of epithelial cells of the early proximal tubule (S1) is accomplished by this glucose transporter:
(5) In the kidneys, glucose transport across the basolateral membrane of epithelial cells of the early proximal tubule (S1) is accomplished by this glucose transporter:
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Posted: Wednesday, January 20, 2016
Last updated: Tuesday, March 11, 2025
Last updated: Tuesday, March 11, 2025
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