The underlying mechanism which directly results in glycosuria is
A) filtration of glucose from the glomerulus.
B) exceeding the threshold for glucose reabsorption.
C) secretion of glucose into the distal tubule.
D) the mechanism is unknown.

Question

Quizplus · Accepted Answer

Glucose is normally freely filtered but then reabsorbed from the tubules into the peritubular capillaries.If the threshold for reabsorption is exceeded as in uncontrolled diabetes mellitus,glycosuria results.Glucose is freely filtered from the glomerulus; this is not the direct cause of glycosuria.Glucose is not secreted into the distal tubule.The underlying mechanism that directly results in glycosuria is exceeding the threshold for glucose reabsorption.

The Underlying Mechanism Which Directly Results in Glycosuria Is