Glomerular filtrate contains glucose in comparison to plasmsa

Options

A. nil
B. equal
C. lower
D. higher

Answer

**Step-by-Step Solution:**

1. **Understanding Glomerular Filtrate:**
- The glomerular filtrate is formed when blood is filtered through the glomeruli in the kidneys. This process allows small molecules and ions to pass through while retaining larger molecules like proteins.

2. **Components of Plasma:**
- Plasma contains various substances, including water, electrolytes, glucose, amino acids, and waste products, but it does not contain proteins in the filtrate due to their larger size.

3. **Filtration Process:**
- During filtration, almost all constituents of the plasma, except proteins, are filtered into the Bowman's capsule, including glucose. Therefore, the concentration of glucose in the glomerular filtrate is initially equal to that in the plasma.

4. **Glucose Reabsorption:**
- Although glucose is present in the glomerular filtrate, it is reabsorbed in the proximal convoluted tubule (PCT) of the nephron. This reabsorption occurs primarily through active transport mechanisms.

5. **Final Comparison:**
- Since glucose is actively reabsorbed from the filtrate back into the bloodstream, the amount of glucose that remains in the urine is negligible under normal conditions. Thus, while the initial concentration of glucose in glomerular filtrate is equal to that in plasma, the final concentration in urine is much lower.

**Conclusion:**
- Therefore, the correct answer to the question is that the concentration of glucose in glomerular filtrate is **equal** to that in plasma.

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