question archive Which of the following is true regarding Renal Function and the filtration of molecules? A) Large molecules like glucose are not filtered into the renal tubules because glucose is too big
Which of the following is true regarding Renal Function and the filtration of molecules? A) Large molecules like glucose are not filtered into the renal tubules because glucose is too big
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Which of the following is true regarding Renal Function and the filtration of molecules?
A) Large molecules like glucose are not filtered into the renal tubules because glucose is too big.
B) Glucose molecules are ultimately secreted into the renal tubules; that is why Glucose is found in the urine of a normal healthy person.
C) Glucose molecules are filtered into the renal tubules but are rapidly reabsorbed; that is why very little glucose is found in the urine of a healthy person.
D) Plasma electrolytes are simply too big to be filtered into the renal tubules; that is why only a small concentration of extracellular electrolytes are found in the urine of a healthy person.
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Glucose molecules are filtered into the renal tubules but are rapidly reabsorbed; that is why very little glucose is found in the urine of a healthy person.
Step-by-step explanation
Most of the nutrients like glucose, amino acids and electrolytes are reabsorbed form the glomerulus via tubular reabsorption under normal conditions. That's why normally we don't see them in urine.
Under pathological conditions, certain nutrients may be seen in urine.
For example, in diabetes, excess glucose in the blood is excreted in the urine.
During certain diseases, protein degradation will be more leading to excretion of amino acids in the urine.
