Which of the following is removed from the filtrate at loop of Henle?

Options

A. Water
B. Glucose
C. Amino acid
D. Hormones

Answer

**Step-by-Step Solution:**

1. **Understanding the Loop of Henle**: The Loop of Henle is a part of the nephron, which plays a crucial role in the concentration of urine. It consists of a descending limb and an ascending limb.

2. **Identifying the Function**: The primary function of the Loop of Henle is to reabsorb water and salts from the filtrate, which helps in concentrating the urine.

3. **Analyzing the Descending Limb**: The thick descending limb of the Loop of Henle is permeable to water. As the filtrate moves down this limb, water is reabsorbed into the surrounding medullary interstitium, leading to a more concentrated filtrate.

4. **Considering Other Substances**: The question asks which substance is removed from the filtrate. In the Loop of Henle, water is the main substance that is reabsorbed. Other substances like glucose and amino acids are primarily reabsorbed in the proximal convoluted tubule (PCT) and not in the Loop of Henle.

5. **Conclusion**: Therefore, the substance that is removed from the filtrate at the Loop of Henle is water.

**Final Answer**: Water is removed from the filtrate at the Loop of Henle.

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