Which of the following hormones stimulates the reabsorption of electrolytes in the kidney ?

Options

A. Arginine
B. TSH
C. ADH
D. ACTH

Answer

To solve the question, "Which of the following hormones stimulates the reabsorption of electrolytes in the kidney?" we will analyze each option provided.

### Step-by-Step Solution:

1. **Understanding the Question**: We need to identify which hormone is responsible for stimulating the reabsorption of electrolytes in the kidneys.

2. **Analyzing the Options**:
- **Arginine**: This is not a hormone but an amino acid. Therefore, it does not stimulate the reabsorption of electrolytes.
- **TSH (Thyroid Stimulating Hormone)**: This hormone is produced by the pituitary gland and primarily stimulates the thyroid gland to produce T3 and T4 hormones, which regulate metabolism. It does not directly influence electrolyte reabsorption in the kidneys.
- **ADH (Antidiuretic Hormone)**: Also known as vasopressin, this hormone is produced in the hypothalamus and released by the posterior pituitary gland. It acts on the kidneys to promote the reabsorption of water and electrolytes, thereby reducing water loss.
- **ACTH (Adrenocorticotropic Hormone)**: This hormone is produced by the pituitary gland and stimulates the adrenal glands to produce cortisol. It does not play a direct role in electrolyte reabsorption in the kidneys.

3. **Identifying the Correct Answer**: Among the options, ADH is the hormone that stimulates the reabsorption of electrolytes in the kidneys.

### Conclusion:
The correct answer is **ADH (Antidiuretic Hormone)**.

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