Given That GFR Is 125 ML/min and the Clearance of Substance

question 170

Multiple Choice

Given that GFR is 125 mL/min and the clearance of substance Y is 200 mL/min, which of the following MUST be true of the renal handling of substance Y?

• A) Y is freely filterable.
• B) Y is reabsorbed.
• C) Y is secreted.
• D) Y is neither reabsorbed nor secreted.
• E) Y is not freely filtered.

---

Definitions:

Electrical Impulse

A sudden surge of energy in one direction, particularly in the context of neurons firing and transmitting information in the body.

Axon

A long, slender projection of a neuron that typically conducts electrical impulses away from the neuron's cell body.

Firing

In the context of neural activity, it refers to the action of a neuron when it sends an electrical signal down its axon to communicate with other neurons.

Action Potential

A rapid, temporary change in a cell's electrical charge that facilitates the transmission of signals in neurons.