Reabsorption occurs in

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks where reabsorption occurs in the body, specifically in relation to the kidneys.

2. **Identifying the Structure**: The kidneys contain functional units called nephrons. Each nephron is responsible for filtering blood and forming urine.

3. **Components of Nephrons**: Nephrons consist of two main parts: the glomerulus and the renal tubule. The glomerulus is a tuft of capillaries where filtration occurs, while the renal tubule is where reabsorption takes place.

4. **Parts of the Renal Tubule**:
- **Bowman's Capsule**: This is where the glomerulus is located and initial filtration occurs.
- **Proximal Convoluted Tubule (PCT)**: Approximately 70-80% of water and electrolytes are reabsorbed here.
- **Loop of Henle**: This section has minimal reabsorption. The descending limb is permeable to water, while the ascending limb is permeable to salts.
- **Distal Convoluted Tubule (DCT)**: Conditional reabsorption of water occurs here, depending on the body's needs.

5. **Collecting Duct**: After the DCT, several nephrons' DCTs join to form the collecting duct. This duct extends from the cortex to the medulla of the kidney, where further reabsorption occurs, influenced by the counter-current mechanism.

6. **Conclusion**: Reabsorption primarily occurs in the renal tubule, specifically in the PCT and DCT, with minimal reabsorption in the Loop of Henle and further reabsorption in the collecting duct.

### Final Answer:
Reabsorption occurs in the renal tubule, specifically in the Proximal Convoluted Tubule (PCT) and Distal Convoluted Tubule (DCT), with minimal reabsorption in the Loop of Henle and additional reabsorption in the collecting duct.

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