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If in a man, normal glucose conc. increases to \( 190 \mathrm{mg} / 100 \mathrm{ml} \). Which of the following will occur?

1. Extra glucose will get deposited in form of ketone bodies
2. Extra glucose is changed to glycogen and get stored in liver
3. Extra glucose will be excreted by kidney.
4. All of the above

Correct answer: Extra glucose will be excreted by kidney.

Solution

When blood glucose rises above the kidney’s reabsorption capacity, glucose appears in the urine. At 190 mg/100 ml, the level is high enough to exceed the renal threshold, so excess glucose is excreted rather than stored as ketone bodies or glycogen.

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