Which statement regarding tubular maximum (Tm)is correct?
A) It is rate of glomerular filtration.
B) It is the rate at which a substance can be reabsorbed because of saturation of the carrier molecule.
C) It is the rate at which a substance can be cleared from the blood.
D) It is the percentage of renal blood flow that can be converted to filtrate.

Question

Quizplus · Accepted Answer

The tubular maximum (Tm) refers to the maximum rate at which a substance can be reabsorbed from the renal tubules, and it occurs when all of the carrier molecules are saturated. It is a measure of the transport capacity of the renal tubules for a particular substance. A) is incorrect because glomerular filtration rate (GFR) is the rate at which the kidneys filter blood. C) is incorrect because clearance rate refers to the rate at which a substance is removed from the blood, either by filtration or secretion. D) is incorrect because renal blood flow is the total volume of blood that flows through the kidneys per unit of time, and it is not directly related to Tm.

Which Statement Regarding Tubular Maximum (Tm)is Correct